冷拉方钢是截面形状为方形的冷拉钢，在加工过程中会出现冷拉方钢太长铣削容易变形的问题。那么如何解决这个问题呢，首先我们要控制长工件的震动问题，这一点是很重要的，具体可以把工件压在铣床平台上加工或用两个平口钳夹住。同时要采用适合长工件加工的生产工艺，例如分两次或三次粗精加工，并选择合适的刀具，刀具刀口要锋利一些，以免工件产生应力而变形，粗加工时要尽量避免工件产生大热量，还可以考虑铣加工后使用磨床精磨。所以想要解决冷拉方钢长工件的变形问题，主要是要控制它的变形量、长工件的震动以及选择合适的加工工艺来进行加工等。
Cold-drawn square steel is a cold-drawn steel with a square cross-section. During processing, cold-drawn square steel is too long to be easily deformed during milling. So how to solve this problem, first of all, we need to control the vibration of the long workpiece. This is very important. Specifically, the workpiece can be pressed on the milling machine platform for processing or clamped with two flat pliers. At the same time, it is necessary to adopt a production process suitable for long workpiece machining, such as roughing and finishing in two or three times, and selecting a suitable tool. The cutting edge of the tool must be sharp to avoid stress and deformation of the workpiece. Avoid rough heat generation in the workpiece You can also consider using a grinder for fine grinding after milling. Therefore, to solve the deformation problem of cold drawn square steel long workpieces, it is mainly to control its deformation amount, vibration of long workpieces, and select a suitable processing technology for processing.
我们还要注意到另外一个问题，冷拉方钢在负温度下应该被直接逐个检查其外观和质量。就冷拉方钢的表面而言，在它们的局部区域不应该有裂纹和颈缩。当温度低于- 20℃时，我们实际上将直接禁止对我们的冷拉方钢进行一系列冷弯操作。如果冬季在负温度条件下焊接冷拉方钢，此时必须小心，尽可能将它们安排在室内。如果焊接必须在室外进行，我们也应该注意环境温度不应该低于-20℃，并且焊接不应该在下雪天进行。
We should also pay attention to another problem. Cold drawn square steel should be directly checked for appearance and quality one by one at negative temperature. As far as the surface of cold drawn square steel is concerned, there should be no cracks and necking in their localized areas. When the temperature is below -20 ° C, we will actually directly prohibit a series of cold bending operations on our cold drawn square steel. If cold drawn square steel is welded under negative temperature conditions in winter, care must be taken at this time to arrange them indoors as much as possible. If welding must be performed outdoors, we should also pay attention that the ambient temperature should not be lower than -20 ° C, and welding should not be performed on snowy days.
当冷拉方钢在室外焊接时，我们也应该注意，当风力超过3级时，应该直接设置防风措施。对于焊接后未冷却的接头，我们必须禁止它们接触冰雪。运输和加工它们时，必须注意防止碰撞或划伤。
When cold drawn square steel is welded outdoors, we should also pay attention to when the wind exceeds 3 levels, we should directly set up wind prevention measures. For joints that have not cooled after welding, we must prevent them from coming into contact with snow and ice. When transporting and processing them, care must be taken to prevent collisions or scratches.
