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模锻件的成形要求及工艺情况
模锻件的成形要求及工艺情况
Forming Requirements and Technological Conditions of Die Forgings
模锻件在工作的过程中主要是指有模具的锻造件,在进行操作时利用模具锻出精度要求比较高,比较复杂的锻件。模锻件的特点应该是针对于自由锻来谈才会好一点,自由锻基本上不会有模具,只能锻轴、环等极其简单的东西,而模锻可以锻出很多结构的产品,且可以控制产品的尺寸公差,减少车加工量。
Die forgings mainly refer to the forgings with dies in the process of work. In the operation, the precision of forging with dies is relatively high and complex. The characteristics of die forgings should be based on free forging. Free forging basically does not have a die, but can only forge axles, rings and other extremely simple things. Die forging can forge many structural products, and can control the size tolerance of products and reduce the turning volume.
模锻件是锻件的一种,锻造工艺对锻件纤维方向的影响;机械性能试棒的位置;印记、钢号位置等。质量合格的锻件还必须具备下列要求:按锻造工艺规程锻制的锻件,其全部尺寸均应符合模锻件图上尺寸的要求,同时,必须满足模锻件图上所规定的技术条件要求,如热处理硬度、错移量大小、毛边痕大小、弯曲度、壁厚差、表面缺陷、除掉氧化皮及机械性能要求等。
Die forging is a kind of forging, the influence of forging process on the direction of forging fiber, the position of mechanical properties test rod, the position of imprint and steel number, etc. Qualified forgings must also meet the following requirements: forgings forged in accordance with the forging process regulations should meet the requirements of all sizes on the die forging drawing, and at the same time, they must meet the requirements of the technical conditions specified in the die forging drawing, such as heat treatment hardness, displacement, rough edge size, bending degree and wall thickness difference. Surface defects, removal of oxide scales and mechanical performance requirements.
模锻件的三条特殊考虑因素
Three Special Considerations of Die Forging
(1)锻压机具有顶杆装置,可以立着锻造带长杆的锻件(即杆的轴线与滑块运动方向一致),以减少在分模面上锻件的周界,并减少毛边金属的消耗。
(1) Forging press has an ejector rod device, which can stand to forge forgings with long rods (i.e. the axis of the rod is consistent with the direction of slider movement), so as to reduce the perimeter of the forgings on the split die surface and the consumption of the metal on the rough edge.
(2)锻压机上模锻的锻件,它的余量的平均尺寸比锤上小30~50%,具体数字可查有关手册确定;
(2) The average dimension of the forgings forged on the forging press is 30-50% smaller than that on the hammer. The specific figures can be determined by referring to relevant manuals.
(3)如靠手钳将锻件从模槽中取出的话,模锻斜度与锤上锻件一样确定,当采用顶杆将锻件顶出时,模锻斜度可显著地减小,但也不能完全没有,否则顶杆受负荷过大。
(3) If the forging is removed from the die groove by hand pliers, the die forging inclination is as determined as that of the hammer forging. When the forging is ejected by the ejector rod, the die forging inclination can be significantly reduced, but it can not be completely eliminated, otherwise the ejector rod will be overloaded.
模锻件使用的模具,称为锻模。从金属开始变形到终成形,都是利用锻模的相应模膛进行的。锻模分上下锻模,分别安装于锤头和砧座上,借助于燕尾和键槽的作用,防止锻模脱出、松动、左右横向移动,并用键块、楔铁将其紧固在锤头燕尾槽内和砧座燕尾槽内,防止锻模前后纵向移动。上下模用锤楔的偏斜方向是不同的,而键块的小头位于锻模燕尾的键槽内,大头位于锤头或模座的燕尾槽的键槽内
The die used in die forging is called forging die. From the beginning of metal deformation to the end of forming, the corresponding chamber of the forging die is used. The forging die is divided into upper and lower forging dies, which are installed on the hammer head and anvil seat respectively. With the help of swallow tail and key groove, the forging die can be prevented from pulling out, loosening and lateral movement. The forging die is fastened in the swallow tail groove of the hammer head and the swallow tail groove of the anvil seat with key blocks and wedges to prevent the longitudinal movement of the forging die before and after. The deviation direction of the hammer wedge for upper and lower dies is different, and the small head of the key block is located in the key groove of the swallow tail of the forging die, and the big head is located in the key groove of the swallow tail groove of the hammer head or the die base.
  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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