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采用轴承钢板一次热翻成型制造轴承套圈毛坯的工艺,我们作了一些试验（图1）,对此工艺分别进行了202、204、306等三个品种外圈的小批、成批和大批量的生产验证,通过反复多次试验和生产验证,到目前为止,由于受到设备和加热条件的限制,仅204、306己投入小批生产,并收到一定效果（图2）。现将我们在实际生产中的一些情况作一初步总结。供兄弟单位参考。 一、热翻工艺过程 在热翻下料之前,首先是对轴承钢板有一定的技术要求。由于热翻后的毛坯几何精度较高,留量较小,所以钢板的尺寸公差应有比较严格的技术条件规定,其原因可用下式说明: 所翻成之毛坯的体积=板料所切之料片的体积
The use of a bearing steel plate thermal roll forming process of rough bushing, we made some experiments (Figure 1), respectively, this process were 202,204,306 three varieties of outer ring small batch, batch and large Batch production verification, through repeated tests and production verification, has hitherto only been put into small-batch production due to equipment and heating conditions, and has received some results (Figure 2). Now we make a preliminary summary of some situations in actual production. For brothers unit reference. First, the process of hot turn over the heat before turning the material, the first is the bearing plate has a certain technical requirements. Due to the geometric accuracy of the blank after the heat up higher retention less, so the dimensional tolerance of the steel plate should have more stringent technical conditions, the reason can be described by the following formula: the volume of the turn into the blank = The volume of the tablet