哪位大侠帮忙翻译一下这篇专业的文章，在此多谢多谢。
PP-H焊接工艺管件、直管采用热熔对接焊接，加工前必须确认管件，直管的品牌、规格、材质符合施工要求。PP-H的焊接常用的方法是热接触焊接和使用焊条进行热气焊。法兰内孔管件...
PP-H焊接工艺
管件、直管采用热熔对接焊接，加工前必须确认管件，直管的品牌、规格、材质符合施工要求。
PP-H 的焊接常用的方法是热接触焊接和使用焊条进行热气焊。法兰内孔管件内孔必须倒角焊接。倒角焊接可增大焊接面积，确保焊接件的强度。法兰密封面处的管口也应环焊。管子焊接时应插入管件，弯头、三通、异径管内，管子与管子焊接时应用束节，插入件必须紧配，保证工件焊接后的强度。
•接触焊接的方法是：首先将准备粘接的材料的各部分进行加热，形成一个该种树脂的熔融层，然后使两个被粘接的断面在足够的压力条件下牢固地固定在一起，直到该种聚合物树脂凝固起来并冷却下来。聚合物树脂熔融层的厚度可以有所不同，它取决于用这种方法粘结的部件横断面的厚度。其主要应注意以下几点：
1.管子管件，必须保持洁净，接缝口处特别要洁净。
2.管子、管件选用直管热熔或弯头，管件热熔机和模具。
3.用专用双面刨刀，修刨熔接面（创刀的刀刃高出转盘面0.05～0.1mm）。
4.根据管子、管件规格调整好夹紧模具的规格。
5.夹紧管子、管件后用专用刨刀修平熔接面吹去接缝口切削碎，确保热熔时二热熔面平整。
6.根据材料和气候条件和管件壁厚，焊接电热板恒温控制在200℃～220℃。
7.用电热板加热时，根据管材壁厚、压力、熔接面出现热熔卷边时，即取出电热板，并迅速将二熔接面压紧，并固定，待熔接部位冷却后，从夹具上卸下联接管或管件。
8.施工前在公司内，先做此批管件试样，经试压确认符合施工要求。
9.热熔对接是专业性很强的技术，必须由经考核的专门熟练技术工人施工。
•焊条进行热气焊: PP-H的表面达到熔融状态，加热器（焊枪）温度范围需达到110℃~130℃，PE熔点在130~140℃左右,其软化点在120~130℃左右。PP熔点在164~170℃左右，环境温度高对焊接有利，而温度较低时效果不好。焊接好的管件最好缓慢冷却。常用的焊接方式有：搭接、球窝熔融焊接和对头焊接。
热风焊接原理及其影响因素：
热风焊接的主要设备有供气系统，加热系统及焊枪组成。
供气系统的作用是提供干净纯净的，具有一定稳定压力和流量的压缩空气。压缩空气的压力一般控制在0.05～0.1Mpa，压力过小供热不足，影响焊接速度；压力过大会使焊缝表面发毛，影响外观。加热系统通常由调压装置和加热元件构成，以保证压缩空气通过加热元件后，压缩空气的温度可以在100～400℃之间变化以适应各种不同的塑料品种。
焊枪的作用是将压缩空气通过加热元件加热到塑件所需温度，经喷嘴对焊接和焊条进行加热，使焊接表面熔化成粘稠状，加压冷却定型得到制品。焊接时喷嘴与工件的角度一般控制在900左右，加热时母材与焊条需同时加热（喷嘴应上下或左右移动，保持母材焊条同时均匀加热）。
热风焊接的焊接强度，主要取决于焊件和焊条的品种，焊缝结构和焊接技术。焊缝结构应根据材料的厚度，制品结构特点，使用场合，焊接的方便等进行选择。焊缝的结构形式分为对接、搭接、角接和T型焊接等。在设计焊缝结构时，接缝尽可能少。 展开
管件、直管采用热熔对接焊接，加工前必须确认管件，直管的品牌、规格、材质符合施工要求。
PP-H 的焊接常用的方法是热接触焊接和使用焊条进行热气焊。法兰内孔管件内孔必须倒角焊接。倒角焊接可增大焊接面积，确保焊接件的强度。法兰密封面处的管口也应环焊。管子焊接时应插入管件，弯头、三通、异径管内，管子与管子焊接时应用束节，插入件必须紧配，保证工件焊接后的强度。
•接触焊接的方法是：首先将准备粘接的材料的各部分进行加热，形成一个该种树脂的熔融层，然后使两个被粘接的断面在足够的压力条件下牢固地固定在一起，直到该种聚合物树脂凝固起来并冷却下来。聚合物树脂熔融层的厚度可以有所不同，它取决于用这种方法粘结的部件横断面的厚度。其主要应注意以下几点：
1.管子管件，必须保持洁净，接缝口处特别要洁净。
2.管子、管件选用直管热熔或弯头，管件热熔机和模具。
3.用专用双面刨刀，修刨熔接面（创刀的刀刃高出转盘面0.05～0.1mm）。
4.根据管子、管件规格调整好夹紧模具的规格。
5.夹紧管子、管件后用专用刨刀修平熔接面吹去接缝口切削碎，确保热熔时二热熔面平整。
6.根据材料和气候条件和管件壁厚，焊接电热板恒温控制在200℃～220℃。
7.用电热板加热时，根据管材壁厚、压力、熔接面出现热熔卷边时，即取出电热板，并迅速将二熔接面压紧，并固定，待熔接部位冷却后，从夹具上卸下联接管或管件。
8.施工前在公司内，先做此批管件试样，经试压确认符合施工要求。
9.热熔对接是专业性很强的技术，必须由经考核的专门熟练技术工人施工。
•焊条进行热气焊: PP-H的表面达到熔融状态，加热器（焊枪）温度范围需达到110℃~130℃，PE熔点在130~140℃左右,其软化点在120~130℃左右。PP熔点在164~170℃左右，环境温度高对焊接有利，而温度较低时效果不好。焊接好的管件最好缓慢冷却。常用的焊接方式有：搭接、球窝熔融焊接和对头焊接。
热风焊接原理及其影响因素：
热风焊接的主要设备有供气系统，加热系统及焊枪组成。
供气系统的作用是提供干净纯净的，具有一定稳定压力和流量的压缩空气。压缩空气的压力一般控制在0.05～0.1Mpa，压力过小供热不足，影响焊接速度；压力过大会使焊缝表面发毛，影响外观。加热系统通常由调压装置和加热元件构成，以保证压缩空气通过加热元件后，压缩空气的温度可以在100～400℃之间变化以适应各种不同的塑料品种。
焊枪的作用是将压缩空气通过加热元件加热到塑件所需温度，经喷嘴对焊接和焊条进行加热，使焊接表面熔化成粘稠状，加压冷却定型得到制品。焊接时喷嘴与工件的角度一般控制在900左右，加热时母材与焊条需同时加热（喷嘴应上下或左右移动，保持母材焊条同时均匀加热）。
热风焊接的焊接强度，主要取决于焊件和焊条的品种，焊缝结构和焊接技术。焊缝结构应根据材料的厚度，制品结构特点，使用场合，焊接的方便等进行选择。焊缝的结构形式分为对接、搭接、角接和T型焊接等。在设计焊缝结构时，接缝尽可能少。 展开
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PP-H Welding Technology
Tube, pipe used Butt Fusion Welding, processing must be confirmed before the tube, pipe the brand, specifications and construction materials in line with the requirements.
PP-H welding method is commonly used in thermal contact welding and the use of hot gas welding electrode. Flange hole inside the tube must be chamfered hole welding. Fillet welding may increase the welding area to ensure the strength of welding pieces. Flange sealing surface of the pipe welding I should ring. Welded tube to be inserted tube, elbow, three, different-diameter pipe, tube and pipe welding applications when the beam section, equipped with plug-ins is important to bear to ensure the strength of welding work.
• welding contact is: first of all to prepare the material adhesion of the various parts of the heating, this type of resin to form a layer of molten, and then the two have been in the cross-section of the adhesive enough pressure under the conditions of fixed firmly together, Until this type of polymer resin with solidification and cooling down. Polymer resin melt layer thickness can be different, it depends on bonded in this way the components of the cross-sectional thickness. The main attention should be the following:
1. Pipe fittings, must be kept clean, the joints have to clean the mouth of the Special Branch.
2. Tube, pipe fitting choice of hot-melt or bend, pipe fittings and hot-melt die.
3. Sided with special plane iron, welding repair plane surface (of a knife blade above the surface to 0.05 ~ 0.1mm).
4. According to the tube, pipe specifications adjusted mold clamping specifications.
5. Clamping tube, pipe fittings after the plane iron with special Shuhei weld seam side Chuiqu I cut pieces to ensure that the hot-melt when the two hot-melt surface formation.
6. According to the materials and climatic conditions and the pipe wall thickness, temperature control board electric welding in the 200 ℃ ~ 220 ℃.
7. Board with electric heating, according to the pipe wall thickness, pressure, welding hot-melt surface appear crimping, that is, remove the electric plate and quickly pressed two weld face and fixed, welding parts to be cooled from the previous fixture Discharge tube or pipe connection.
8. In the pre-construction company, the first batch of sample tube, the pressure test to confirm the construction in line with the request.
9. Butt Fusion is a highly professional technology, must be devoted to the assessment of skilled construction workers.
• hot gas welding rod: PP-H to reach the surface of the molten state, the heater (torch) temperature range needed to reach 110 ℃ ~ 130 ℃, PE in the melting point of about 130 ~ 140 ℃, and its softening point in about 120 ~ 130 ℃. PP in the melting point of about 164 ~ 170 ℃, high-temperature welding on the beneficial effects of low temperature and poor. Good welding pipe best slow cooling. Welding methods are commonly used: lap, Waterloo molten ball on the right track welding and soldering.
Welding principle of hot air and Influencing Factors:
The main hot-air welding equipment supply systems, heating system and the composition of the welding torch.
Gas supply system to provide clean and pure, has a certain stability of the pressure and flow of compressed air. The air pressure in the general control of 0.05 ~ 0.1Mpa, the pressure is too small inadequate heating, the effects of welding speed; pressure over the General Assembly so that the seam Famao surface, the appearance of influence. Heating systems are usually installed by the regulator and the heating elements constituted to ensure that the compressed air through the heating elements, the air temperature can be 100 ~ 400 ℃ to adapt to the changes between the different varieties of plastic.
The torch is compressed air through the heating elements will be heated to the temperature required for plastic parts, the nozzle of the welding electrode and heating, so that the welding surface Ronghua Cheng-thick, pressurized cooling products to be stereotyped. Welding work with the nozzle when the angle of the general control of the 900 or so, when the heating and welding materials to be heated at the same time (nozzle should be up and down or moving around, the electrode materials at the same time maintain uniform heating).
Hot air welding of welding strength depends largely on welding and soldering pieces of the species, the structure of welding and welding technology. Weld structure should be based on the thickness of the material, product structure, the use of occasions such as the welding of convenience to choose. The structure is divided into weld in the form of butt, lap, then angle and T-welding and so on. Weld in the design of the structure, the joints as little as possible.
Tube, pipe used Butt Fusion Welding, processing must be confirmed before the tube, pipe the brand, specifications and construction materials in line with the requirements.
PP-H welding method is commonly used in thermal contact welding and the use of hot gas welding electrode. Flange hole inside the tube must be chamfered hole welding. Fillet welding may increase the welding area to ensure the strength of welding pieces. Flange sealing surface of the pipe welding I should ring. Welded tube to be inserted tube, elbow, three, different-diameter pipe, tube and pipe welding applications when the beam section, equipped with plug-ins is important to bear to ensure the strength of welding work.
• welding contact is: first of all to prepare the material adhesion of the various parts of the heating, this type of resin to form a layer of molten, and then the two have been in the cross-section of the adhesive enough pressure under the conditions of fixed firmly together, Until this type of polymer resin with solidification and cooling down. Polymer resin melt layer thickness can be different, it depends on bonded in this way the components of the cross-sectional thickness. The main attention should be the following:
1. Pipe fittings, must be kept clean, the joints have to clean the mouth of the Special Branch.
2. Tube, pipe fitting choice of hot-melt or bend, pipe fittings and hot-melt die.
3. Sided with special plane iron, welding repair plane surface (of a knife blade above the surface to 0.05 ~ 0.1mm).
4. According to the tube, pipe specifications adjusted mold clamping specifications.
5. Clamping tube, pipe fittings after the plane iron with special Shuhei weld seam side Chuiqu I cut pieces to ensure that the hot-melt when the two hot-melt surface formation.
6. According to the materials and climatic conditions and the pipe wall thickness, temperature control board electric welding in the 200 ℃ ~ 220 ℃.
7. Board with electric heating, according to the pipe wall thickness, pressure, welding hot-melt surface appear crimping, that is, remove the electric plate and quickly pressed two weld face and fixed, welding parts to be cooled from the previous fixture Discharge tube or pipe connection.
8. In the pre-construction company, the first batch of sample tube, the pressure test to confirm the construction in line with the request.
9. Butt Fusion is a highly professional technology, must be devoted to the assessment of skilled construction workers.
• hot gas welding rod: PP-H to reach the surface of the molten state, the heater (torch) temperature range needed to reach 110 ℃ ~ 130 ℃, PE in the melting point of about 130 ~ 140 ℃, and its softening point in about 120 ~ 130 ℃. PP in the melting point of about 164 ~ 170 ℃, high-temperature welding on the beneficial effects of low temperature and poor. Good welding pipe best slow cooling. Welding methods are commonly used: lap, Waterloo molten ball on the right track welding and soldering.
Welding principle of hot air and Influencing Factors:
The main hot-air welding equipment supply systems, heating system and the composition of the welding torch.
Gas supply system to provide clean and pure, has a certain stability of the pressure and flow of compressed air. The air pressure in the general control of 0.05 ~ 0.1Mpa, the pressure is too small inadequate heating, the effects of welding speed; pressure over the General Assembly so that the seam Famao surface, the appearance of influence. Heating systems are usually installed by the regulator and the heating elements constituted to ensure that the compressed air through the heating elements, the air temperature can be 100 ~ 400 ℃ to adapt to the changes between the different varieties of plastic.
The torch is compressed air through the heating elements will be heated to the temperature required for plastic parts, the nozzle of the welding electrode and heating, so that the welding surface Ronghua Cheng-thick, pressurized cooling products to be stereotyped. Welding work with the nozzle when the angle of the general control of the 900 or so, when the heating and welding materials to be heated at the same time (nozzle should be up and down or moving around, the electrode materials at the same time maintain uniform heating).
Hot air welding of welding strength depends largely on welding and soldering pieces of the species, the structure of welding and welding technology. Weld structure should be based on the thickness of the material, product structure, the use of occasions such as the welding of convenience to choose. The structure is divided into weld in the form of butt, lap, then angle and T-welding and so on. Weld in the design of the structure, the joints as little as possible.
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PP-H welding method is commonly used in thermal contact welding and the use of hot gas welding electrode. Flange hole inside the tube must be chamfered hole welding. Fillet welding may increase the welding area to ensure the strength of welding pieces. Flange sealing surface of the pipe welding I should ring. Welded tube to be inserted tube, elbow, three, different-diameter pipe, tube and pipe welding applications when the beam section, equipped with plug-ins is important to bear to ensure the strength of welding work.
• welding contact is: first of all to prepare the material adhesion of the various parts of the heating, this type of resin to form a layer of molten, and then the two have been in the cross-section of the adhesive enough pressure under the conditions of fixed firmly together, Until this type of polymer resin with solidification and cooling down. Polymer resin melt layer thickness can be different, it depends on bonded in this way the components of the cross-sectional thickness. The main attention should be the following:
1. Pipe fittings, must be kept clean, the joints have to clean the mouth of the Special Branch.
2. Tube, pipe fitting choice of hot-melt or bend, pipe fittings and hot-melt die.
3. Sided with special plane iron, welding repair plane surface (of a knife blade above the surface to 0.05 ~ 0.1mm).
4. According to the tube, pipe specifications adjusted mold clamping specifications.
5. Clamping tube, pipe fittings after the plane iron with special Shuhei weld seam side Chuiqu I cut pieces to ensure that the hot-melt when the two hot-melt surface formation.
6. According to the materials and climatic conditions and the pipe wall thickness, temperature control board electric welding in the 200 ℃ ~ 220 ℃.
7. Board with electric heating, according to the pipe wall thickness, pressure, welding hot-melt surface appear crimping, that is, remove the electric plate and quickly pressed two weld face and fixed, welding parts to be cooled from the previous fixture Discharge tube or pipe connection.
8. In the pre-construction company, the first batch of sample tube, the pressure test to confirm the construction in line with the request.
9. Butt Fusion is a highly professional technology, must be devoted to the assessment of skilled construction workers.
• hot gas welding rod: PP-H to reach the surface of the molten state, the heater (torch) temperature range needed to reach 110 ℃ ~ 130 ℃, PE in the melting point of about 130 ~ 140 ℃, and its softening point in about 120 ~ 130 ℃. PP in the melting point of about 164 ~ 170 ℃, high-temperature welding on the beneficial effects of low temperature and poor. Good welding pipe best slow cooling. Welding methods are commonly used: lap, Waterloo molten ball on the right track welding and soldering.
Welding principle of hot air and Influencing Factors:
The main hot-air welding equipment supply systems, heating system and the composition of the welding torch.
Gas supply system to provide clean and pure, has a certain stability of the pressure and flow of compressed air. The air pressure in the general control of 0.05 ~ 0.1Mpa, the pressure is too small inadequate heating, the effects of welding speed; pressure over the General Assembly so that the seam Famao surface, the appearance of influence. Heating systems are usually installed by the regulator and the heating elements constituted to ensure that the compressed air through the heating elements, the air temperature can be 100 ~ 400 ℃ to adapt to the changes between the different varieties of plastic.
The torch is compressed air through the heating elements will be heated to the temperature required for plastic parts, the nozzle of the welding electrode and heating, so that the welding surface Ronghua Cheng-thick, pressurized cooling products to be stereotyped. Welding work with the nozzle when the angle of the general control of the 900 or so, when the heating and welding materials to be heated at the same time (nozzle should be up and down or moving around, the electrode materials at the same time maintain uniform heating).
Hot air welding of welding strength depends largely on welding and soldering pieces of the species, the structure of welding and welding technology. Weld structure should be based on the thickness of the material, product structure, the use of occasions such as the welding of convenience to choose. The structure is divided into weld in the form of butt, lap, then angle and T-welding and so on. Weld in the design of the structure, the joints as little as possible.
• welding contact is: first of all to prepare the material adhesion of the various parts of the heating, this type of resin to form a layer of molten, and then the two have been in the cross-section of the adhesive enough pressure under the conditions of fixed firmly together, Until this type of polymer resin with solidification and cooling down. Polymer resin melt layer thickness can be different, it depends on bonded in this way the components of the cross-sectional thickness. The main attention should be the following:
1. Pipe fittings, must be kept clean, the joints have to clean the mouth of the Special Branch.
2. Tube, pipe fitting choice of hot-melt or bend, pipe fittings and hot-melt die.
3. Sided with special plane iron, welding repair plane surface (of a knife blade above the surface to 0.05 ~ 0.1mm).
4. According to the tube, pipe specifications adjusted mold clamping specifications.
5. Clamping tube, pipe fittings after the plane iron with special Shuhei weld seam side Chuiqu I cut pieces to ensure that the hot-melt when the two hot-melt surface formation.
6. According to the materials and climatic conditions and the pipe wall thickness, temperature control board electric welding in the 200 ℃ ~ 220 ℃.
7. Board with electric heating, according to the pipe wall thickness, pressure, welding hot-melt surface appear crimping, that is, remove the electric plate and quickly pressed two weld face and fixed, welding parts to be cooled from the previous fixture Discharge tube or pipe connection.
8. In the pre-construction company, the first batch of sample tube, the pressure test to confirm the construction in line with the request.
9. Butt Fusion is a highly professional technology, must be devoted to the assessment of skilled construction workers.
• hot gas welding rod: PP-H to reach the surface of the molten state, the heater (torch) temperature range needed to reach 110 ℃ ~ 130 ℃, PE in the melting point of about 130 ~ 140 ℃, and its softening point in about 120 ~ 130 ℃. PP in the melting point of about 164 ~ 170 ℃, high-temperature welding on the beneficial effects of low temperature and poor. Good welding pipe best slow cooling. Welding methods are commonly used: lap, Waterloo molten ball on the right track welding and soldering.
Welding principle of hot air and Influencing Factors:
The main hot-air welding equipment supply systems, heating system and the composition of the welding torch.
Gas supply system to provide clean and pure, has a certain stability of the pressure and flow of compressed air. The air pressure in the general control of 0.05 ~ 0.1Mpa, the pressure is too small inadequate heating, the effects of welding speed; pressure over the General Assembly so that the seam Famao surface, the appearance of influence. Heating systems are usually installed by the regulator and the heating elements constituted to ensure that the compressed air through the heating elements, the air temperature can be 100 ~ 400 ℃ to adapt to the changes between the different varieties of plastic.
The torch is compressed air through the heating elements will be heated to the temperature required for plastic parts, the nozzle of the welding electrode and heating, so that the welding surface Ronghua Cheng-thick, pressurized cooling products to be stereotyped. Welding work with the nozzle when the angle of the general control of the 900 or so, when the heating and welding materials to be heated at the same time (nozzle should be up and down or moving around, the electrode materials at the same time maintain uniform heating).
Hot air welding of welding strength depends largely on welding and soldering pieces of the species, the structure of welding and welding technology. Weld structure should be based on the thickness of the material, product structure, the use of occasions such as the welding of convenience to choose. The structure is divided into weld in the form of butt, lap, then angle and T-welding and so on. Weld in the design of the structure, the joints as little as possible.
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PP - H welding process
Adopt socket straight pipe fitting, welding, docking must make sure pipe before processing straight, the brand, specification and material conform to requirements.
PP - H welding methods of thermal contact welding is used to heat and welding oxyacetylene. Within the flange holes in the pipe inner pore must chamfering welding. Chamfering welding welding area, ensure to increase the intensity of the welded. The pipe flanges sealing ring should also be welding. When the pipe welding fitting, bend, should be inserted three pipe diameter and pipe welding tubes, with the application of beam section, when insert parts must be tight, ensure the intensity of welding workpieces.
Contact welding method, are: first will prepare adhesive materials of each part of the resin, forming a molten layer, and then make the two were adhesive in enough pressure condition firmly fixed together until the polymer resin, coagulation and cools down. Polymer resin molten layer thickness can vary with this method, it depends on the part of the binder cross-sectional thickness. Its main should pay attention to the following:
1 pipe fitting, must maintain, clean, joint mouth to clean.
2 pipes, fittings, l-straight selection, pipe socket welding-welding or bend machine and mould.
3. Use special double-sided planer knives, planer knives (splicing of blade and turn the disk 0.05 to 0.1 higher mm).
4 pipes, fittings, according to specifications to adjust the clamping mould specifications.
5 the clamping pipes, fittings, special planer knives with watches welding seam face away cutting, ensure mouth when socket welding-welding two smooth surface.
6. According to the material and climatic conditions and tube wall thickness, welding electrothermal board in 200 ° ~ constant temperature control 220 degrees Celsius.
7. Use electrothermal board heat pipes, according to the wall thickness, stress, welding surface thermal roll edges, appeared out that electrothermal board, and quickly two welding surface, and fixed tightly, welding parts cools, remove from the fixture or pipe linkage tube.
8. Before the construction company in the first batch pipes, and the testing samples confirm with construction requirements.
9. Thermal docking is a professional very strong technology, must by specialized skilled technical workers assessment.
Welding, thermal oxyacetylene: PP - H, surface to melt temperature range (welding torch) heater to 110 degrees ~ 130 ° c, PE melting in 130-140 degrees Celsius, the softening point in 120 ~ 130m degrees Celsius. 164-170 in PP melting temperature environment degrees Celsius, high temperature, and welding beneficial effect is low. The best slow cooling tube welding good. Common ways: by welding, melt soldering and nest adversary welding.
Hot welding principle and its influencing factors:
The main equipment is welding of hot gas system, heating system, and welding torch.
Supply system role is to provide clean pure, certain pressure and flow of compressed air. Compressed air pressure generally control in 0.05 to 0.1 Mpa, stress, small heat affect welding speed, Stress to weld appearance, healthy surface. The heating system by the pressure regulating devices and usually heating element, to ensure the compressed air through the heating element, compressed air temperature of 100-400 degrees Celsius can adapt to changes between different kinds of plastic varieties.
Welding is used to compressed air through the heating element is needed to plastic parts, the nozzle of welding temperature and heat, the welding rod surface melting into the thick, by cooling finalizing the pressurized. When the angles and nozzle, general control in heating and mother to heating rod and nozzle should (or move around, welding and evenly heating mother materials).
The air welding welding strength, welding rod, and mainly depends on the weld structure, and welding technology. Weld structure should be based on the thickness of materials, products, using structural characteristics, easy to choose the welding. The weld structure form into docking, lap, meet and T welding. In the design of the weld structure, joint as little as possible.
Adopt socket straight pipe fitting, welding, docking must make sure pipe before processing straight, the brand, specification and material conform to requirements.
PP - H welding methods of thermal contact welding is used to heat and welding oxyacetylene. Within the flange holes in the pipe inner pore must chamfering welding. Chamfering welding welding area, ensure to increase the intensity of the welded. The pipe flanges sealing ring should also be welding. When the pipe welding fitting, bend, should be inserted three pipe diameter and pipe welding tubes, with the application of beam section, when insert parts must be tight, ensure the intensity of welding workpieces.
Contact welding method, are: first will prepare adhesive materials of each part of the resin, forming a molten layer, and then make the two were adhesive in enough pressure condition firmly fixed together until the polymer resin, coagulation and cools down. Polymer resin molten layer thickness can vary with this method, it depends on the part of the binder cross-sectional thickness. Its main should pay attention to the following:
1 pipe fitting, must maintain, clean, joint mouth to clean.
2 pipes, fittings, l-straight selection, pipe socket welding-welding or bend machine and mould.
3. Use special double-sided planer knives, planer knives (splicing of blade and turn the disk 0.05 to 0.1 higher mm).
4 pipes, fittings, according to specifications to adjust the clamping mould specifications.
5 the clamping pipes, fittings, special planer knives with watches welding seam face away cutting, ensure mouth when socket welding-welding two smooth surface.
6. According to the material and climatic conditions and tube wall thickness, welding electrothermal board in 200 ° ~ constant temperature control 220 degrees Celsius.
7. Use electrothermal board heat pipes, according to the wall thickness, stress, welding surface thermal roll edges, appeared out that electrothermal board, and quickly two welding surface, and fixed tightly, welding parts cools, remove from the fixture or pipe linkage tube.
8. Before the construction company in the first batch pipes, and the testing samples confirm with construction requirements.
9. Thermal docking is a professional very strong technology, must by specialized skilled technical workers assessment.
Welding, thermal oxyacetylene: PP - H, surface to melt temperature range (welding torch) heater to 110 degrees ~ 130 ° c, PE melting in 130-140 degrees Celsius, the softening point in 120 ~ 130m degrees Celsius. 164-170 in PP melting temperature environment degrees Celsius, high temperature, and welding beneficial effect is low. The best slow cooling tube welding good. Common ways: by welding, melt soldering and nest adversary welding.
Hot welding principle and its influencing factors:
The main equipment is welding of hot gas system, heating system, and welding torch.
Supply system role is to provide clean pure, certain pressure and flow of compressed air. Compressed air pressure generally control in 0.05 to 0.1 Mpa, stress, small heat affect welding speed, Stress to weld appearance, healthy surface. The heating system by the pressure regulating devices and usually heating element, to ensure the compressed air through the heating element, compressed air temperature of 100-400 degrees Celsius can adapt to changes between different kinds of plastic varieties.
Welding is used to compressed air through the heating element is needed to plastic parts, the nozzle of welding temperature and heat, the welding rod surface melting into the thick, by cooling finalizing the pressurized. When the angles and nozzle, general control in heating and mother to heating rod and nozzle should (or move around, welding and evenly heating mother materials).
The air welding welding strength, welding rod, and mainly depends on the weld structure, and welding technology. Weld structure should be based on the thickness of materials, products, using structural characteristics, easy to choose the welding. The weld structure form into docking, lap, meet and T welding. In the design of the weld structure, joint as little as possible.
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