模具鋼材的變形主要原因是怎樣的呢？冷作模具鋼廠家認為，模具鋼材的變形主要原因是模具鋼中存有內(nèi)應力或是外部增加的應力。內(nèi)應力是因溫度遍布不勻稱或是改變而致，內(nèi)應力也是原因之一。

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.

外應力造成的變形主要是因為工件自身重量而導致的“坍塌”，在特殊情況下也應考慮到撞擊被加溫的工件，或是夾緊專用工具夾緊所造成的凹痕等。

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.

變形包含彈性變形和塑性變形二種。規(guī)格轉(zhuǎn)變主要是根據(jù)機構(gòu)變化，故表現(xiàn)出一樣的澎漲和收攏，但當工件上面有主骨或是繁雜樣子工件，則將造成額外的變形。假如熱處理產(chǎn)生很多奧氏體則產(chǎn)生澎漲，假如造成很多殘留馬氏體則相對應的要收攏。

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，淬火時一般產(chǎn)生收攏，而發(fā)生二次硬底化狀況的碳素鋼則產(chǎn)生澎漲，假如開展深冷暴力，則因為殘留馬氏體的奧氏體化而進一步澎漲，這種機構(gòu)的汽化熱都伴隨著碳含量的提升而擴大，故碳含量提升也使規(guī)格變化量擴大。

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.

當加溫大型工件時，存有內(nèi)應力或是加溫不勻稱，均可造成變形。內(nèi)應力主要來自生產(chǎn)過程。當存有這種應力時，因為伴隨著溫度的上升，鋼的屈服強度慢慢降低，即便加溫很勻稱，很輕度的應力也會造成變形。

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，工件的邊緣位置內(nèi)應力較高，當溫度的升高從外部逐漸完成時，邊緣位置變形很大，內(nèi)應力造成的變形包含彈性變形和塑性變形二種。加溫時造成的內(nèi)應力和變得應力全是造成變形的原因。

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.

加溫速率越快、工件規(guī)格越大、橫截面轉(zhuǎn)變越大，則加溫變形越大。內(nèi)應力在于溫度的不分布均勻水平和溫度場，他們?nèi)窃斐蔁嶙冃萎a(chǎn)生差別的原因。假如內(nèi)應力高過原材料的高溫屈服極限，則造成塑性變形，這類塑性變形就表現(xiàn)為“變形”。

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".

上述所講解的就是模具鋼材的變形主要原因，希望看完能夠?qū)δ兴鶐椭?，如果您想要了解更多關于模具鋼材的相關信息的話，歡迎在線咨詢客服或是直接關注我們網(wǎng)站http://www.6886774.cn聯(lián)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 http://www.6886774.cn Contact!