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  当前位置 -> 行业资讯- 钣金厂为您讲解钣金加工的过程中的常见问题 发布时间:(2018/7/11)

钣金厂为您讲解钣金加工的过程中的常见问题


1、刀具磨损加快:一般含高熔点元素、塑性大,切削温度高,使刀具磨损加快,磨刀、换刀频繁,从而影响了生产效率,提高了刀具使用成本。

2、切削力大,切削温度高:该类型材料强度大,切削时切向应力大、塑性变形大,因而切削力大。此外材料导热性极差,造成不锈钢加工切削温度升高,且高温往往集中在刀具刃口附近的狭长区域内,从而加快了刀具的磨损。

3、加工硬化严重:不锈钢以及一些高温合金不锈钢均为奥氏体组织,切削时加工硬化倾向大,通常是普通碳素钢的数倍,刀具在加工硬化区域内切削,使刀具寿命缩短。

4、容易粘刀:无论是奥氏体不锈钢还是马氏体不锈钢均存在加工时切屑强韧、切削温度很高的特点。当强韧的切屑流经前刀面时,将产生粘结、熔焊等粘刀现象,影响钣金加工零件表面粗糙度。

 在钣金加工过程中由于不锈钢材料导热性能差,在应用中模性也是较小,孔一般在加工也是不难的;遇到钣金加工困难,那我们应该怎么解决呢?钣金加工厂家提醒您那就是要选用合适的刀具材料,这样才能确定刀具的参数和刀具的切削的用数。

1, tool wear accelerated: generally containing high melting point element, large plastic, high cutting temperature, cutting tool wear faster, grinding knife, changing knife frequently, thus affecting the production efficiency and improve the cost of cutting tools.

2, the cutting force is large and the cutting temperature is high: this type of material has high strength, large tangential stress and large plastic deformation during cutting, so the cutting force is large. In addition, the thermal conductivity of the material is very poor, which causes the increase of the cutting temperature of the stainless steel, and the high temperature is often concentrated in the narrow area near the cutting edge of the tool, thus speeding up the wear of the tool.

3. Machining hardening is serious: stainless steel and some superalloy stainless steel are austenite. The machining hardening tendency is large, usually several times of ordinary carbon steel, cutting tool in the hardened area makes cutting tool life shorter.

4, easy to stick knife: whether it is austenitic stainless steel or martensitic stainless steel, there are characteristics of chip toughness and cutting temperature. When the tough chip flows through the rake face, it will produce adhesion, welding and other sticky knife phenomenon, affecting the surface roughness of sheet metal parts.

In the process of sheet metal processing, due to poor thermal conductivity of stainless steel materials, in the application of the model is also smaller, the hole is generally in processing is not difficult, and facing the difficult processing of sheet metal, how should we solve it? Sheet metal processing manufacturers remind you that it is necessary to choose the right tool materials, so as to determine the parameters of the tool and the number of cutting tools.

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