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联系人:黄经理

电话:0312-2200737

手机:13582266002

地址:保定市莲池区朱庄工业区

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影响模锻件质量的主要因素
影响模锻件质量的主要因素
1.原材料缺陷
1. raw material defects

如钢锭或钢材存在残余的缩孔、气泡、疏松、夹杂等,可能导致锻件开裂。冶金原因引起的锻造裂纹,其高倍检验特征,经常是伴有大量的氧化物、硫化物、硅酸盐等夹杂。高碳、高合金钢的原材料,容易存在严重的碳化物等第二相偏析,如果锻造时未能予以击碎并使其分布均匀,则会降低锻件的力学性能,热处理时可能导致锻件开裂或畸变。原材料表面若存在刮伤、结疤、折叠、发裂都会给锻件带来缺陷。因此,在模锻生产中必须对原材料进行检验。
If there are residual shrinkage holes, bubbles, loose and inclusions in ingot or steel, cracking may occur. The high strength inspection characteristics of forging cracks caused by metallurgical reasons are often accompanied by a large number of inclusions of oxides, sulphides and silicates. The raw materials of high carbon and high alloy steel are easy to have serious second phase segregation of carbides. If the forging is not broken and distributed evenly, the mechanical properties of the forgings will be reduced, and the cracking or distortion of the forgings may be caused by heat treatment. Scratching, scarring, folding and cracking will result in defects on the surface of the raw material. Therefore, raw materials must be inspected in die forging.



2.加热规范
2. heating specification

锻造大型模锻件、合金钢模锻件时,若加热速度太快,内外层温差大,因温度应力和组织应力将导致中心部分裂纹。
When forging large mould forgings and alloy steel forgings, if the heating speed is too fast and the temperature difference between the inner and outer layers is large, the central part of the crack will be caused by the temperature stress and the tissue stress.
  1. 联系人:黄经理
  2. 电话:0312-2200737
  3. 手机:13582266002
  4. 网址:www.ln22.cn
  5. 地址:保定市莲池区朱庄工业区

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