由于热变形形成纤维***，会使金属的力学性能出现异向性，即纵向力学性能指标中的A，Z，Ak比横向相应的指标大得多，两个方向上的强度Rm。Re差别不大。
Due to the formation of fibrous microstructure by thermal deformation， the mechanical properties of metals will be different. That is， A， Z and Ak in longitudinal mechanical properties are much larger than those itransverse direction， and the strength in two directi*** is Rm. Re is not very different.
拔长
也称延伸，它是使坯料横断面积减小、长度增加的锻造工序。拔长常用于锻造杆、轴类零件。
自由锻造的基本工序包括镦粗、拔长、冲孔、弯曲、扭转、错移、切割及锻接等。
Pulling length Also known as elongation， it is a forging process to reduce the cross-sectional area of the billet and increase the length. Pullout is often used in forging rods and shaft parts. The basic processes of free forging include upsetting，forging谁家好， drawing， punching， bending， torsion， offset，沈阳forging， cutting and forging.
锻造设备种类很多，按照工作部分运行方式不同，forging价格，锻造设备可分为直线往复运动和相对旋转运动两大类。直线往复锻造设备1、动载撞击的锻造设备2、动静载联合的锻造设备3，***能冲击的锻造设备。
There are many kinds of forging equipment. According to the different operation modes of the working part， the forging equipment can be divided into two categories: straight reciprocating motion and relative rotation motion.
Linear reciprocating forging equipment
1， forging equipment with dynamic load impact
2， forging equipment combined with static and static load
3， high efficiency impacting forging equipment
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