冷拉方鋼是截面形狀為方形的冷拉鋼，在加工過程中會出現(xiàn)冷拉方鋼太長銑削容易變形的問題。那么如何解決這個問題呢，首先我們要控制長工件的震動問題，這一點是很重要的，具體可以把工件壓在銑床平臺上加工或用兩個平口鉗夾住。同時要采用適合長工件加工的生產(chǎn)工藝，例如分兩次或三次粗精加工，并選擇合適的刀具，刀具刀口要鋒利一些，以免工件產(chǎn)生應(yīng)力而變形，粗加工時要盡量避免工件產(chǎn)生大熱量，還可以考慮銑加工后使用磨床精磨。所以想要解決冷拉方鋼長工件的變形問題，主要是要控制它的變形量、長工件的震動以及選擇合適的加工工藝來進(jìn)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.

我們還要注意到另外一個問題，冷拉方鋼在負(fù)溫度下應(yīng)該被直接逐個檢查其外觀和質(zhì)量。就冷拉方鋼的表面而言，在它們的局部區(qū)域不應(yīng)該有裂紋和頸縮。當(dāng)溫度低于- 20℃時，我們實際上將直接禁止對我們的冷拉方鋼進(jìn)行一系列冷彎操作。如果冬季在負(fù)溫度條件下焊接冷拉方鋼，此時必須小心，盡可能將它們安排在室內(nèi)。如果焊接必須在室外進(jìn)行，我們也應(yīng)該注意環(huán)境溫度不應(yīng)該低于-20℃，并且焊接不應(yīng)該在下雪天進(jìn)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.

當(dāng)冷拉方鋼在室外焊接時，我們也應(yīng)該注意，當(dāng)風(fēng)力超過3級時，應(yīng)該直接設(shè)置防風(fēng)措施。對于焊接后未冷卻的接頭，我們必須禁止它們接觸冰雪。運輸和加工它們時，必須注意防止碰撞或劃傷。

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.