Roll Forming

Brief description: Roller making requirements for aluminum guide rolls

The working surface of the aluminum guide roller should be finely machined to ensure dimensional accuracy and surface roughness. The coating has anti-flaking ability to ensure that the working surface of the roller has good wear resistance and corrosion resistance.
1. The rollers of the aluminum guide rolls should be sufficiently rigid to ensure that the bending deformation does not exceed the permissible value under heavy loads.
 
2. The surface of the roller should have sufficient hardness. It is generally required to reach above 50 degrees HRC and has strong corrosion resistance. The coating has anti-flaking ability to ensure that the working surface of the roller has good wear resistance and corrosion resistance.

3. The working surface of the aluminum guide roller should be finely machined to ensure dimensional accuracy and surface roughness.

The roughness should be above a0.16, and there should be no pores or grooves. The wall thickness of the working surface of the roller should be uniform, otherwise the temperature of the roller surface will be uneven, which will affect the quality of the product.

4. The material of the roller should have good thermal conductivity. Usually, chilled cast iron is used. In special cases, cast steel or molybdenum-chromium alloy steel can be used to achieve rapid and uniform heating or cooling.

The reasons for the roll print are:
(1) knife flowers remain after processing of the aluminum guide roll;
(2) The pressure of the exit guide is too large;
(3) The aluminum guide roller or straightening roller is bruised by foreign objects;
(4) Straightening roll hole type curve does not match the product.

Ways to prevent and eliminate aluminum roller roll printing are:
(1) Improve the surface hardness and processing quality of the aluminum guide roll and the straightening roll;
(2) Correctly install the exit guide;
(3) Reasonable design of straightening roller hole type.

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