有关铸铁平台检测平台的退火种类
时间：2015/12/22 14:16:54
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说道铸铁平台检测平台退火，这是一个专业性和操作性比较强的实战工作，光靠一张嘴来说是说不通说不穿的，今天就简明扼要的讲下关于铸铁平台检测平台的退火种类，这里贵在普及，在这里我会尽量用一些通俗的话来讲，以期达到能使入门者很快理解。
铸铁平台检测平台退火有三种或四种类型
就拿汽车的发动机的飞轮来说，它是一个比较大型的铸件，它的铸造就需要完全退火或等温退火，其目的是消除内应力，杂质在铸造的过程已经燃烧掉，如果不消除内部不对称的应力在高速运转的飞轮中有可能会撕裂，这样是很危险的。而退火的目的就是是钢结构由奥氏体变成珠光体。
在一些水果刀菜刀之类刀具上需要球化退火，也就是低温退火，温度的巨大变化容易导致钢结构脆性，也就是我们常说刀刃容易嘣豁口，而低温退火完全可以弥补这一缺陷。一把好的刀具如果有合理的退火工艺它一般是不会崩坏的。
最后一种就是消除应力退火。玩过电焊的都知道，焊条在焊接过程中温度受热不均匀这样会是有残余应力，这时候需要放入小于300度的炉子里去除应力，在此阶段还要保持温度，是残余应力一点点殆尽，这样才会生产出合格的工件。
上面三条就是铸造平台的三种退火种类，这三种方法不同但是都有一个共同点就是为了改善钢结构，消除内应力，减少钢结构内部的杂质，使钢产品达到优秀的标准。
It is said that the cast iron platform inspection platform is annealed. This is a professional and operationally strong actual combat work. It can't be said that it can't be said by one mouth. Today, we will briefly explain the types of annealing on the cast iron platform inspection platform. Here, you are popular, here I will try to use some popular words, in order to achieve a quick understanding of the beginners.
Cast iron platform inspection platform annealing has three or four types
Take the flywheel of the engine of the car, it is a relatively large casting, its casting needs to be fully annealed or isothermally annealed, the purpose is to eliminate the internal stress, the impurities have been burned in the casting process, if not eliminated inside Symmetrical stresses can tear in high-speed flywheels, which is dangerous. The purpose of annealing is to change the steel structure from austenite to pearlite.
In some tools such as fruit knife kitchen knives, spheroidizing annealing is required, that is, low temperature annealing. The large temperature change easily leads to the brittleness of the steel structure. That is, we often say that the blade is easy to break the gap, and low temperature annealing can completely compensate for this defect. A good tool will generally not break if it has a reasonable annealing process.
The last one is stress relief annealing. Those who have played the electric welding know that the temperature of the welding rod is uneven during the welding process, so there will be residual stress. At this time, it is necessary to put the stress in the furnace less than 300 degrees to remove the stress. At this stage, the temperature is maintained, which is a little residual stress. Exhaustion, in order to produce qualified workpieces.
The above three are the three types of annealing of the casting platform. These three methods are different but have one thing in common in order to improve the steel structure, eliminate the internal stress, reduce the impurities inside the steel structure, and make the steel products reach excellent standards.
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