谁帮我把下面的英文翻译成中文 20分求答案 20
OxyacetyleneWeldingAnoxyacetyleneweldisproducedbyheatingwithaflameobtainedfromthecomb...
Oxyacetylene Welding
An oxyacetylene weld is produced by heating with a flame obtained from the combustion of oxygen and acetylene with or without the use of a filler metal.Most often the joint is heated to a state of fusion and as a rule no pressure is used.
A schematic sketch of a welding torch and its gas supply is shown in Figure 6.2. Gas pressures are controlled by regulating valves,and final adjustment is done manually at the torch.Regulation of the proportion of the two gases is extre mely important because the characteristics of the flame may vary.
The chemical reaction that occurs when acetylene and oxygen are burned in a neutral flame occurs in two stages ,one at the inner cone and at the outer envelope .
When there is an excess of acetylene used there is a decided change in the appearance of the flame.Three zones will be found instead of the two just described.Between the luminous cone and the outer envelope there is an intermediate,white-colored cone that has its length determined by the amount of excess acetylene.This flame,known as reducing or carburising flame,is used in the welding of Monel metal,nickel,certain alloy steels, and many of the nonferrous,hard surfacing materials.
If the torch is adjusted to give excess oxygen,a flame similar in appearance to the neutral flame is obtained except that the inner luminpus cone is much shorter and the outer envelope appears to have more color.This oxidizing flame may be used in fusion welding brass and bronze but is undesirable in other applications.
The advantages and uses of oxyacetylene welding are numerous.The equipment is comparatively inexpensive and requires little maintenance.It is portable and can be used with equal facility in the field and in the factory.With proper technique practically all metals can be welded and the equipment used for cutting as well as for welding. 展开
An oxyacetylene weld is produced by heating with a flame obtained from the combustion of oxygen and acetylene with or without the use of a filler metal.Most often the joint is heated to a state of fusion and as a rule no pressure is used.
A schematic sketch of a welding torch and its gas supply is shown in Figure 6.2. Gas pressures are controlled by regulating valves,and final adjustment is done manually at the torch.Regulation of the proportion of the two gases is extre mely important because the characteristics of the flame may vary.
The chemical reaction that occurs when acetylene and oxygen are burned in a neutral flame occurs in two stages ,one at the inner cone and at the outer envelope .
When there is an excess of acetylene used there is a decided change in the appearance of the flame.Three zones will be found instead of the two just described.Between the luminous cone and the outer envelope there is an intermediate,white-colored cone that has its length determined by the amount of excess acetylene.This flame,known as reducing or carburising flame,is used in the welding of Monel metal,nickel,certain alloy steels, and many of the nonferrous,hard surfacing materials.
If the torch is adjusted to give excess oxygen,a flame similar in appearance to the neutral flame is obtained except that the inner luminpus cone is much shorter and the outer envelope appears to have more color.This oxidizing flame may be used in fusion welding brass and bronze but is undesirable in other applications.
The advantages and uses of oxyacetylene welding are numerous.The equipment is comparatively inexpensive and requires little maintenance.It is portable and can be used with equal facility in the field and in the factory.With proper technique practically all metals can be welded and the equipment used for cutting as well as for welding. 展开
1个回答
展开全部
氧乙炔焊
氧乙炔焊一个是由与氧气和乙炔燃烧获得的或不经常上联是加热到融合状态填充metal.Most使用和作为一个没有压力是用来统治的火焰加热。
一个焊枪和天然气供应示意图示意图见图6.2。气体压力调节阀控制，并完成最后的调整在该两种气体的比例torch.Regulation手动是extre和Mely重要，因为火焰的特性可能会有所不同。
通过化学反应的乙炔和氧气时发生在一个中立的火焰燃烧过程一般分为两个阶段，在内部锥和外信封之一。
当有过量使用的乙炔有一个在flame.Three区的外观变化将是决定，而不是仅仅described.Between发现的两个发光锥和外罩有一个中间，白色的锥有它的长度超过acetylene.This的火焰金额减少或碳化焰称，有决心，在金属的蒙乃尔，镍，某些合金钢焊接用，以及有色金属，硬质铺装材料很多。
如果奥运火炬被调整为给予过多的氧，火焰在外观上是中性火焰相似，只是内部luminpus锥是要短得多，外层信封似乎有更多的color.This氧化焰中可能获得的熔焊用黄铜和铜牌，但在其他应用程序不可取的。
的优势和氧乙炔焊接设备的用途是numerous.The相对便宜，只需要很少的maintenance.It便于携带，可用于在外地和在factory.With适当的技术与设备几乎等于所有的金属可焊接和设备用于切割，焊接，以及作为。
朗读
显示对应的拉丁字符的拼音字典 - 查看字典详细内容
氧乙炔焊一个是由与氧气和乙炔燃烧获得的或不经常上联是加热到融合状态填充metal.Most使用和作为一个没有压力是用来统治的火焰加热。
一个焊枪和天然气供应示意图示意图见图6.2。气体压力调节阀控制，并完成最后的调整在该两种气体的比例torch.Regulation手动是extre和Mely重要，因为火焰的特性可能会有所不同。
通过化学反应的乙炔和氧气时发生在一个中立的火焰燃烧过程一般分为两个阶段，在内部锥和外信封之一。
当有过量使用的乙炔有一个在flame.Three区的外观变化将是决定，而不是仅仅described.Between发现的两个发光锥和外罩有一个中间，白色的锥有它的长度超过acetylene.This的火焰金额减少或碳化焰称，有决心，在金属的蒙乃尔，镍，某些合金钢焊接用，以及有色金属，硬质铺装材料很多。
如果奥运火炬被调整为给予过多的氧，火焰在外观上是中性火焰相似，只是内部luminpus锥是要短得多，外层信封似乎有更多的color.This氧化焰中可能获得的熔焊用黄铜和铜牌，但在其他应用程序不可取的。
的优势和氧乙炔焊接设备的用途是numerous.The相对便宜，只需要很少的maintenance.It便于携带，可用于在外地和在factory.With适当的技术与设备几乎等于所有的金属可焊接和设备用于切割，焊接，以及作为。
朗读
显示对应的拉丁字符的拼音字典 - 查看字典详细内容
本回答由网友推荐
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
