Ball screw: it has the characteristics of saving raw materials, high efficiency, high strength, high gloss, high precision and good interchangeability. Especially the slender rod, the effect is particularly remarkable, and the cutting screw rod is unable to compare.

一、在对细长丝杆进行调质处理的时候，因为需要进行垂直的吊装，所以需要在工序中进行钻孔处理。

1、 When the long and thin screw rod is quenched and tempered, due to the need for vertical lifting, it is necessary to drill in the process.

二、如果规定的工序中需要进行毛坯的弯曲的话，是不可以进行冷校直的，主要是因为对钢材进行轧制的时候，整个过程中会产生大量的内应力，在经过校直之后，如果不再次进行热处理将应力去除的话，那么在进行粗车之后还会直接恢复到原来的状态。

2、 If the blank needs to be bent in the specified process, cold straightening is absolutely not allowed. The main reason is that when rolling the steel, a large amount of internal stress will be generated in the whole process. After straightening, if the stress is not removed by heat treatment again, it will directly return to the original state after rough turning.

三、进行粗车后，还需要进行调质的处理，主要的目的是为了将材料的组织进行有效的改善，细长的晶粒，有效的将内应力进行，将切削的性能进行有效的改善。

3、 After rough turning, quenching and tempering treatment is also needed. The main purpose is to effectively improve the structure of the material, the slender grain, effectively eliminate the internal stress, and effectively improve the cutting performance.

四、为了有用的确保传动的丝杆精度，在经过长期的使用之后还是不变，可以在加工的过程中，进行二次的气温时效处理，可以安排在半精车的后面，目的主要是为了将切削和加工后的内应力进行，有用的保证丝杆在尺寸上的稳定，还有一次则可以安排在粗车的螺纹之后。

4、 In order to effectively ensure the accuracy of the driving screw rod, it will not change after long-term use. In the process of processing, the secondary air temperature aging treatment can be arranged behind the semi finish turning. The main purpose is to eliminate the internal stress after cutting and processing, and effectively ensure the stability of the screw rod in size. Another time, it can be arranged in the rough turning After the thread.

因为整个切除在加工的余量上还是比较大的，而且在经过切断之后的材料上纤维的组织会导致变形，所以在经过校直之后，整个塑性的变形会导致内部残留的应力变大，所以必须及时的安排时效的处理工作，让整个内应力可以得到充分的释放。

Because the whole cutting in the processing allowance is relatively large, and after cutting the material on the fiber structure will lead to deformation, so after straightening, the whole plastic deformation will lead to internal residual stress increase, so we must timely arrange the aging treatment work, so that the whole internal stress can be fully released.