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冲压模具在渗碳经常见的问题是什么,如何处理?

来源:    发布时间:2019-10-09 18:28:52    点击:

  冲压模具渗碳是模具加工中的重要工序之一,也是冲压模具必须加工的工序,但冲压模具渗碳后的工序很容易出现一些缺陷,导致模具加工完成后会出现一些缺陷。冲压模具渗碳过程中存在五种常见缺陷。
  Carburizing of stamping die is one of the important processes in die processing, and it is also the process that stamping die must be processed. However, the process after carburizing of stamping die is prone to some defects, resulting in some defects after the completion of die processing. There are five common defects in carburizing process of stamping die.
  1. 低硬度
  1. Low hardness
  济南新丰奥氏体内容提示的原因之一是冲压模具硬度低,渗碳层的残留奥氏体含量经常因为高温渗碳表面碳浓度过高,冲压模具硬度低的另一个原因是表面碳浓度很低,的原因是表面碳浓度很低,渗碳温度过低;低渗碳气体流量;真空淬火油吸收大量空气;其他油,如汽缸油,大量混入真空淬火油介质中。
  One of the reasons indicated by the content of austenite in Xinfeng, Jinan is that the hardness of stamping die is low, and the residual austenite content in carburized layer is often due to the high carbon concentration on the surface of high temperature carburizing, and the other reason is that the surface carbon concentration is very low, the carburizing temperature is too low; the flow rate of low carburizing gas is low; the vacuum quenching oil absorbs a lot of air; other oil, such as cylinder oil A large amount of vacuum quenching oil is mixed into the medium.
  二是渗碳层深度达不到技术要求
山东模具
  Second, the depth of carburized layer can not meet the technical requirements.
  冲压模渗碳层深度超标的原因是渗碳温度高或渗碳时间长。深度低于技术要求的原因是渗碳温度低或渗碳时间短。
  The reason why the depth of carburized layer of stamping die exceeds the standard is that the carburizing temperature is high or the carburizing time is long. The reason why the depth is lower than the technical requirement is that the carburizing temperature is low or the carburizing time is short.
  三、冲压模具本身渗碳层不均匀
  3. Non-uniform Carburizing Layer of Stamping Die造成这种情况的原因可能是:渗碳气体与空气混合;无脉冲渗碳;渗碳气体压力过低;炉料过多,填充过密;渗碳气体纯度低,产生较多炭黑等。
  The reasons may be: mixed carburizing gas with air; no pulse carburizing; too low pressure of carburizing gas; too much burden and too dense filling; low purity of carburizing gas and more carbon black.
  四、碳黑、烫金模也附在碳黑上
  4. Carbon black and bronzing die are also attached to carbon black.
  当渗碳过程中产生大量炭黑时,可能会造成加热器与炉体之间、加热器与加热器之间的电短路,增加设备的维护工作量。使冲孔模孔内堵塞,渗碳层不均匀,增加了去除炭黑表面零件的工作。
  When a large amount of carbon black is produced in the carburizing process, it may cause short circuit between heater and furnace body, between heater and heater, and increase the maintenance workload of equipment. The plugging in the hole of punching die and the uneven carburizing layer increase the work of removing carbon black surface parts.
  冲压模的亮度下降
  Brightness Decrease of Stamping Die
  冲压模具在真空渗碳和风冷后应呈银白色,如出料部位的亮度劣化,原因可能是:炉体产生了较大的漏电;真空淬火油中混入较多的空气;冷却气体(如氮气)纯度低,含氧量高。较多的油缸混入真空淬火油介质中。
  Stamping dies should be silver-white after vacuum carburizing and air cooling. For example, the brightness of discharging parts deteriorates. The reasons may be: the furnace body produces a larger leakage; more air is mixed in vacuum quenching oil; the purity of cooling gas (such as nitrogen) is low and oxygen content is high. More cylinders are mixed with vacuum quenching oil.
  以上是山东模具公司为大家介绍的相关内容,本文来源:http://www.jnhjgs.cnThe above is the related content introduced by Shandong Mould Company. The source of this article is http://www.jnhjgs.cn.
 
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