模具钢材的变形主要原因是怎样的呢？冷作模具钢厂家认为，模具钢材的变形主要原因是模具钢中存有内应力或是外部增加的应力。内应力是因溫度遍布不匀称或是改变而致，内应力也是原因之一。

What are the main reasons for the deformation of die steel? The manufacturer of cold work die steel believes that the main reason for the deformation of die steel is the existence of internal stress or increased external stress in the die steel. Internal stress is caused by uneven temperature distribution or change, and internal stress is also one of the reasons.

外应力造成的变形主要是因为工件自身重量而导致的“坍塌”，在特殊情况下也应考虑到撞击被加温的工件，或是夹紧专用工具夹紧所造成的凹痕等。

The deformation caused by external stress is mainly due to the "collapse" caused by the weight of the workpiece itself. Under special circumstances, the impact on the heated workpiece or the dent caused by the clamping of special tools should also be considered.

变形包含弹性变形和塑性变形二种。规格转变主要是根据机构变化，故表现出一样的澎涨和收拢，但当工件上面有主骨或是繁杂样子工件，则将造成额外的变形。假如热处理产生很多奥氏体则产生澎涨，假如造成很多残留马氏体则相对应的要收拢。

Deformation includes elastic deformation and plastic deformation. The change of specification is mainly based on the change of mechanism, so it shows the same swell and collapse. However, when there is a main bone or complicated workpiece on the workpiece, additional deformation will be caused. If a lot of austenite is produced during heat treatment, it will swell, and if a lot of residual martensite is produced, it should be closed.

除此之外，淬火时一般产生收拢，而发生二次硬底化状况的碳素钢则产生澎涨，假如开展深冷暴力，则因为残留马氏体的奥氏体化而进一步澎涨，这种机构的汽化热都伴随着碳含量的提升而扩大，故碳含量提升也使规格变化量扩大。

In addition, during quenching, there is generally collapse, while the carbon steel with secondary hardening and underplating will swell. If cryogenic violence is carried out, it will further swell due to the austenitization of residual martensite. The vaporization heat of this mechanism will expand with the increase of carbon content, so the increase of carbon content will also expand the specification change.

当加温大型工件时，存有内应力或是加温不匀称，均可造成变形。内应力主要来自生产过程。当存有这种应力时，因为伴随着溫度的上升，钢的屈服强度慢慢降低，即便加温很匀称，很轻度的应力也会造成变形。

When heating large workpieces, internal stress or uneven heating can cause deformation. The internal stress mainly comes from the production process. When there is such stress, the yield strength of the steel decreases slowly with the rise of temperature. Even if the heating is very symmetrical, very slight stress will cause deformation.

一般，工件的边缘位置内应力较高，当溫度的升高从外部逐渐完成时，边缘位置变形很大，内应力造成的变形包含弹性变形和塑性变形二种。加温时造成的内应力和变得应力全是造成变形的原因。

Generally, the internal stress at the edge of the workpiece is high. When the temperature rises gradually from the outside, the deformation at the edge is large. The deformation caused by the internal stress includes elastic deformation and plastic deformation. The internal stress and deformation stress caused by heating are all the causes of deformation.

加温速率越快、工件规格越大、横截面转变越大，则加温变形越大。内应力在于溫度的不分布均匀水平和温度场，他们全是造成热变形产生差别的原因。假如内应力高过原材料的高溫屈服极限，则造成塑性变形，这类塑性变形就表现为“变形”。

The faster the heating rate, the larger the workpiece size, and the larger the cross-section transformation, the greater the heating deformation. The internal stress lies in the uneven level and temperature field of temperature, which are all the reasons for the difference of thermal deformation. If the internal stress is higher than the high temperature yield limit of raw materials, plastic deformation will be caused, and this kind of plastic deformation will be shown as "deformation".

上述所讲解的就是模具钢材的变形主要原因，希望看完能够对您有所帮助，如果您想要了解更多关于模具钢材的相关信息的话，欢迎在线咨询客服或是直接关注我们网站https://www.jnqhmj.com联系！

The above explanation is the main reason for the deformation of die steel. I hope it will be helpful to you after reading it. If you want to know more about die steel, please consult customer service online or follow our website directly https://www.jnqhmj.com Contact!