Manufacture process of high performance ductile iron roll

Abstract

The present invention discloses manufacture process of high performance ductile iron roll, belongs to the field of crane roll making technology, and solves the problem of once casting formation. By means of the research on high performance cast ductile iron and the research on casting mold material, paint and casting process, the present invention has simplified roll manufacturing process, raised material utilization, low power consumption, obviously raised mechanical performance and use performance of the roll and obviously lowered production cost.

Description

technical field [0001] The invention relates to a crane drum and its manufacturing technology. Background technique [0002] The drum is one of the important parts of the crane. Since the steel wire rope is wound on the drum after assembly, the drum directly bears the load, so the quality of the drum itself plays a vital role in the safe operation of the crane. With the large-scale of modern engineering (such as the increasing number of high dam buildings), the lifting machinery is also developing towards large-scale, and its lifting weight and lift are greatly increased, with the lift reaching tens of meters or even hundreds of meters, and the weight reaching hundreds of tons ( For example, the fixed hoist hoist of the Xiaolangdi Project is 5000kN), which puts forward new and higher requirements for the material and structure of the reel. [0003] (1) The type of roll. [0004] According to the shape of the cylinder, it can be divided into long-axis reel and short-axis re...

AI Technical Summary

Problems solved by technology

However, its technical difficulty is very high. It is necessary to ensure high dimensional accuracy and surface quality, and avoid defects such as shrinkage, subcutaneous pores, and surface ash layer. This is also a key problem to be solved by the present invention.

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