由于不同的切割方法具有不同的切割效果，因此有必要根据客户的要求进行适当的选择。在切割薄壁钢材时，特别是在锯床上，应尽量选用。

Due to the varying cutting effects of different cutting methods, it is necessary to make appropriate choices based on customer requirements. When cutting thin-walled steel, especially on sawing machines, it should be selected as much as possible.

济南C型钢厂家之所以提出这样的建议，是因为这里的下料要准确，采用简易电锯法是合适的。工作效率高，断面光滑，质量好，切削误差小。当然，C型钢也可以采用气割，但为了提高气割质量，采用小直径喷嘴，切割后用锤子轻轻敲击，使切口光滑，满足各种用途的要求。

The reason why Jinan C-shaped steel manufacturers propose this suggestion is because the cutting here needs to be accurate, and using a simple electric saw method is appropriate. High work efficiency, smooth cross-section, good quality, and small cutting error. Of course, C-shaped steel can also be cut by gas cutting, but in order to improve the quality of gas cutting, a small diameter nozzle is used. After cutting, gently tap with a hammer to make the cut smooth and meet the requirements of various uses.

C型钢是一种经济高成效的型材。由于截面形状合理，产品广泛应用于檩条、墙梁等多种场合。C型梁能起到很好的固定檩条的作用，当然只能通过钻孔C型梁来完成。

C-shaped steel is an economically efficient profile. Due to its reasonable cross-sectional shape, the product is widely used in various occasions such as purlins and wall beams. C-beams can effectively fix purlins, but of course, this can only be achieved by drilling C-beams.

济南C型钢通常由C型钢成型机自动加工成型，然后在此基础上进行钻孔作业。通过测量长度来确定钻孔位置，然后用相关设备冲出圆孔、椭圆连接孔等不同功能的孔，将轮廓切断使用。

Jinan C-shaped steel is usually automatically processed and formed by a C-shaped steel forming machine, and then drilling operations are carried out on this basis. Determine the drilling position by measuring the length, and then use relevant equipment to punch out holes with different functions such as circular holes and elliptical connection holes, and cut the contour for use.

济南C型钢钻孔压力的调整

Adjustment of drilling pressure for Jinan C-shaped steel

(1) 钻孔是C型钢檩条制造中的一种常用方法，可用于几乎任何规格钢板和型钢的孔加工。钻孔的原理是切削，孔壁损伤小，成孔精度高。钻孔在钻床上进行。当构件受场地狭窄限制，特殊加工部位不易用钻机加工时，可采用电钻、风钻加工。

(1) Drilling is a common method in the manufacturing of C-shaped steel purlins, which can be used for hole machining of almost any specification of steel plates and profiles. The principle of drilling is cutting, with minimal damage to the hole wall and high drilling accuracy. Drilling is carried out on a drilling machine. When the component is limited by the narrow site and special processing parts are not easy to process with a drilling rig, electric drills or pneumatic drills can be used for processing.

(2) 冲孔在冲床(冲床)上进行。一般只能在较薄的钢板和型钢上冲孔，孔径一般不小于钢材厚度。也可用于不重要的节点板、垫板、角钢支撑等小零件的加工。冲孔生产效率高，但由于孔周围冷加工硬化，孔壁质量差，有塌孔和孔底增加的趋势，因此，除对孔质量要求不高外，还是作为预制孔(未加工孔)，C型钢檩条直接使用较少。当螺栓孔与螺栓的距离较大时，即孔径大于50mm时，也可采用火焰切割。

(2) Punching is carried out on a punching machine. Generally, punching can only be done on thinner steel plates and profiles, and the aperture is generally not less than the thickness of the steel. It can also be used for processing small parts such as unimportant node plates, cushion plates, angle steel supports, etc. Punching has high production efficiency, but due to cold work hardening around the hole, the quality of the hole wall is poor, and there is a trend of collapse and an increase in the hole bottom. Therefore, in addition to low requirements for hole quality, it is still used as a prefabricated hole (unprocessed hole), and C-shaped steel purlins are less commonly used. When the distance between the bolt hole and the bolt is large, that is, when the aperture is greater than 50mm, flame cutting can also be used.