0571-89270228
收缩
  • 电话咨询

  • 0571-89270228

资讯中心

网站首页 > 资讯中心 > 行业动态
  • 锻造锻件时模锻变形工步及模膛特点和作用有哪些?
  • 本站编辑:杭州崇贤重型机械有限公司发布日期:2018-05-17 17:03 浏览次数:
模膛是锻模的主要成形零件。在每一个模膛内的锻造操作过程称为工步。如预锻模膛内的锻造操作过程称为预锻工步。在模具设计时,根据锻件形状和尺寸,可选择不同制坯及预锻工步,但必须有终锻工步及切断工步。
The mold is the main forming part of the forging die. The forging operation in each mold is called a working step. For example, the forging process in the forging die chamber is called the pre forging step. According to the shape and size of the forgings, different blanks and pre forging steps can be selected in mold design, but there must be end forging steps and cutting steps.
定制锻件2
一、制坯工步或制坯模膛
1. Blank manufacture step or blank mold chamber
镦粗:镦粗坯料,使坯料的高度减小,直径增大。用于饼类锻件的制坯。使坯料直径与锻件相接近,有利于锻件的成形,减少终锻锤击次数,提高模膛寿命,并能除去坯料侧表面上的氧化皮。
Upsetting: upsetting billet reduces the height of the billet and increases the diameter. The billet used for the forgings of the cake. The diameter of the blank is close to the forging, which is beneficial to the forming of the forgings, reducing the number of hammer strikes, improving the life of the die, and removing the oxide skin on the surface of the blank.
压扁:压扁坯料,使坯料变扁增宽,压扁后坯料的长度几乎不变。多用于外形扁宽的锻件制坯。
Flattening: flattening the blank so that the blank becomes flat and widened, and the length of the billet is almost unchanged after flattening. Most of the forgings are made of flat and wide shape.
滚挤:使坯料局部横截面增大,相邻部分减小,稍许增加坯料的长度。经过滚压后,坯料沿轴线准确分配体积,使表面光滑圆浑。操作时坯料绕轴线作90°翻转,不作进给。
Roll extrusion: the local cross section of the billet is enlarged, the adjacent part is reduced, and the length of the billet is slightly increased. After rolling, the volume of the billet is accurately distributed along the axis, making the surface smooth and round. During operation, the billet is turned 90 degrees around the axis without feeding.
拔长:减小坯料局部横截面面积,使坯料长度增加,从而使坯料的体积沿轴线重新分配。操作时坯料绕毛坯轴线作90°翻转并沿轴线向模膛进给。
Pull out: reduce the local cross sectional area of billet, increase the length of billet, so that the volume of the billet is redistributed along the axis. During operation, the billet is turned 90 degrees around the blank axis and fed along the axis to the mold cavity.
压肩:使坯料的局部截面略有增加,压下部分展宽。操作时坯料一般不翻转。
Press shoulder: make the local section of the billet slightly increase, and the part of the press is widened. In general, the blank is not turned over.
弯曲:使坯料轴线弯曲,获得与锻件水平投影图形相近的形状,以适应轴线弯曲的锻件终锻成形要求。
Bending: bending the blank axis and obtaining a shape similar to that of the horizontal projection of the forging to meet the final forging requirement for the forging of the axis.
二、模锻工步或模锻模膛
Two. Die forging or die forging die
预锻:通过预锻获得与终锻接近的形状,以利锻件在终锻时的比较终成形,能改善金属流动条件,有利终锻的充满,避免终锻产生折叠并提高终锻模膛寿命。
Pre forging: the shape close to the final forging is obtained by pre forging, so that the final forming of the forgings in the final forging can improve the metal flow conditions, benefit the filling of final forging, avoid the final forging and increase the life of the die die.
终锻:通过终锻获得比较终的锻件形状,所有的锻件都必须经过终锻。终锻模膛周围有飞边槽,用以容纳多余的金属。
Final forging: the final forging shape is obtained through final forging, and all forgings must undergo final forging. There are flash grooves around the final forging chamber to accommodate excess metal.
三、切断工步或切断模膛
Three. Cut off or cut off the mold chamber
切断:在一根棒料上锻多个锻造件时,利用切断模膛将锻造件从棒料上分离。
Cut off: when forging multiple forgings on a bar, the forgings are separated from the bar by cutting the die chamber.