A Casting Process for Reducing Hardness Difference of Traction Sheave Rope Groove Surface

Abstract

The invention relates to a casting technology capable of reducing the hardness difference of a traction wheel rope groove face. The casting technology comprises the following technical steps: manufacturing an upper sand box; manufacturing a lower sand box; making a core; milling a molten iron casting passage; assembling a mould; (f) casting; cleaning. A water inlet is formed in the sand core of an inner cavity in a milling manner, so that a feed head is in multi-point communication with a sand cavity; on one hand, the sand core of the inner cavity is positioned in the center of the cavity, and thus casting molten iron flows in from the middle of the cavity; one the other hand, the feed head is in multi-point communication with a sand cavity, so that the times spent on the molten iron in different directions reaches the same horizontal plane of the rope groove face are the same, the temperatures at the circle of the rope groove face are small in difference and relatively uniform, the subsequent solidification processes are basically the same, the hardness difference of the traction wheel rope groove face is reduced, and the product quality of castings is improved.

Description

technical field [0001] The invention relates to a casting process of a traction sheave, in particular to a casting process for reducing the hardness difference of the rope groove surface of the traction sheave. Background technique [0002] The traction sheave, also known as the traction sheave or the driving sheave, is the sheave on the traction machine, the device for the elevator to transmit traction power, it uses the friction between the rope groove and the traction wire rope to transmit power, and is installed in the reducer on the worm shaft. like figure 1 The traction sheave shown includes an annular rim 1', a hub 2' coaxially arranged in the center of the rim 1', an annular connecting part that connects the rim 1' and the hub 2' and is perpendicular to the axial direction 3', vertically arranged on one side of the annular connection part 3' and coaxial with the bushing 2', is used for fixing the rope groove 4' of the wire rope. Wherein the outer surface of the ri...

AI Technical Summary

Problems solved by technology

The existing traction sheave casting process often results in a higher temperature on the side where the molten iron enters and a lower temperature on the side away from the gate, resulting in a large difference in temperature distribution on the rope groove surface, resulting in inconsistent subsequent solidification processes, resulting in high hardness differences

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