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冲压模具在渗碳经常见的题目

来历:beat365官网:http://es2c.com 日期:2021-03-25 宣布人:liqiang 阅读次数:
冲压模具渗碳是加工模具中主要的工序之一,也是冲压模具必加工的工序,可是冲压模具在颠末渗碳工序是轻易呈现一些缺点,从而致使模具加工实现后会呈现一些缺点。对于冲压模具渗碳工序经常见的有五大缺点。
Carburizing of stamping die is one of the important processes in the process of die, and it is also the necessary process of stamping die. However, some defects are easy to appear in the process of carburizing of stamping die, which leads to some defects after the completion of die processing. There are five common defects in carburizing process of stamping die.
一、硬度低
1、 Low hardness
济南模具厂提醒剩余奥氏体量多是形成冲压模具硬度低的缘由之一,渗碳层中的剩余奥氏体量多常是因为渗碳温渡过高因此外表碳浓渡过高的缘由,形成冲压模具硬度低的另外一缘由是外表碳浓度低,形成外表碳浓度低的缘由是:渗碳温渡太低;渗碳气体流量小;真空淬煤油中接收了大批的氛围;其余油类,比方油缸油大批混进真空淬煤油中等。
Jinan die & Mould Factory suggests that the residual austenite mass is one of the reasons for the low hardness of stamping die. The residual austenite mass in carburized layer is often caused by the high surface carbon concentration due to the high carburizing temperature. Another reason for the low hardness of stamping die is the low surface carbon concentration, The reasons for the low surface carbon concentration are: the carburizing temperature is too low; the carburizing gas flow is small; a large amount of air is absorbed in the vacuum quenching oil; other oils, such as cylinder oil, are mixed into the vacuum quenching oil.
二、渗碳层深度达不到手艺前提请求
2、 The depth of carburized layer can not meet the technical requirements
形成冲压模具渗碳层深度跨越请求的缘由是渗碳温度高或渗碳时候长,深度低于手艺前提请求的缘由是渗碳温度低或渗碳时候短。
The reason why the depth of carburized layer of stamping die exceeds the requirements is that the carburizing temperature is high or the carburizing time is long. The reason why the depth is lower than the technical requirements is that the carburizing temperature is low or the carburizing time is short.
三、冲压模具自身渗碳层不平均
3、 Uneven carburizing layer of stamping die itself
形成这类环境的缘由能够是:渗碳气中混入了氛围;没接纳脉冲渗碳体例;渗碳气压力太低;装炉量过量过密;渗碳气纯度低,发生了较多的炭黑等。
The reasons may be as follows: air is mixed in carburizing gas; pulse carburizing method is not used; carburizing gas pressure is too low; charging quantity is too much and too dense; carburizing gas purity is low, resulting in more carbon black, etc.
四、炭黑多,冲压模具上也附着有炭黑
4、 More carbon black, stamping die also attached with carbon black
在渗碳进程中发生了大批的炭黑时,能够形成加热器与炉体、加热器与加热器间的电短路,减轻装备的维修任务量;使冲压模具的小孔梗塞,渗碳层不平均,加大断根整机外表炭黑的任务量。
When a large amount of carbon black is produced in the carburizing process, it may cause electric short circuit between heater and furnace body, heater and heater, and increase the maintenance workload of equipment; the small holes of stamping die are blocked, the carburizing layer is uneven, and the workload of removing carbon black on the surface of parts is increased.
五、冲压模具的亮光度好转
5、 Brightness deterioration of stamping die
冲压模具在真空渗碳并气冷后出炉时应呈雪红色,若是出炉时整机的亮光度好转,缘由能够是:炉子发生了较大的泄露;真空淬煤油中混入了较多的氛围;冷却气体(比方氮气)纯度不高,此中含有较多的氧气;较多的油缸油混入到真空淬煤油中等。
The stamping die should be silvery white when it comes out of the furnace after vacuum carburizing and gas cooling. If the brightness of the parts deteriorates when it comes out of the furnace, the reasons may be: the furnace has a large leakage; more air is mixed into the vacuum quenching oil; the purity of the cooling gas (such as nitrogen) is not high, which contains more oxygen; more cylinder oil is mixed into the vacuum quenching oil.

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