有關(guān)鑄鐵平臺檢測平臺的退火種類(lèi)
時(shí)間：2015/12/22 14:16:54
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說(shuō)道鑄鐵平臺檢測平臺退火，這是一個(gè)專(zhuān)業(yè)性和操作性比較強的實(shí)戰工作，光靠一張嘴來(lái)說(shuō)是說(shuō)不通說(shuō)不穿的，今天就簡(jiǎn)明扼要的講下關(guān)于鑄鐵平臺檢測平臺的退火種類(lèi)，這里貴在普及，在這里我會(huì )盡量用一些通俗的話(huà)來(lái)講，以期達到能使入門(mén)者很快理解。
鑄鐵平臺檢測平臺退火有三種或四種類(lèi)型
就拿汽車(chē)的發(fā)動(dòng)機的飛輪來(lái)說(shuō)，它是一個(gè)比較大型的鑄件，它的鑄造就需要完全退火或等溫退火，其目的是消除內應力，雜質(zhì)在鑄造的過(guò)程已經(jīng)燃燒掉，如果不消除內部不對稱(chēng)的應力在高速運轉的飛輪中有可能會(huì )撕裂，這樣是很危險的。而退火的目的就是是鋼結構由奧氏體變成珠光體。
在一些水果刀菜刀之類(lèi)刀具上需要球化退火，也就是低溫退火，溫度的巨大變化容易導致鋼結構脆性，也就是我們常說(shuō)刀刃容易嘣豁口，而低溫退火完全可以彌補這一缺陷。一把好的刀具如果有合理的退火工藝它一般是不會(huì )崩壞的。
最后一種就是消除應力退火。玩過(guò)電焊的都知道，焊條在焊接過(guò)程中溫度受熱不均勻這樣會(huì )是有殘余應力，這時(shí)候需要放入小于300度的爐子里去除應力，在此階段還要保持溫度，是殘余應力一點(diǎn)點(diǎn)殆盡，這樣才會(huì )生產(chǎn)出合格的工件。
上面三條就是鑄造平臺的三種退火種類(lèi)，這三種方法不同但是都有一個(gè)共同點(diǎn)就是為了改善鋼結構，消除內應力，減少鋼結構內部的雜質(zhì)，使鋼產(chǎn)品達到優(yōu)秀的標準。
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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