Casting technology capable of reducing hardness difference of traction wheel rope groove face

A casting process and traction sheave technology are applied in the field of casting process to reduce the hardness difference of the rope groove surface of the traction sheave. Poor, the temperature difference is not big, the effect of improving product quality

Active Publication Date: 2013-12-25
SUZHOU TORIN MACHINERY CASTING
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  • Claims
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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, resu

Method used

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  • Casting technology capable of reducing hardness difference of traction wheel rope groove face
  • Casting technology capable of reducing hardness difference of traction wheel rope groove face

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Example Embodiment

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Using the casting process of the present invention to reduce the hardness difference of the rope groove surface of the traction sheave, casting such as figure 1 The traction sheave shown includes the following steps:

[0023] (a) Making the upper sand box: Fix the mold with the same size and shape as the traction wheel on the mold frame, heat the mold to 30~50 ° C and spray the release agent on its surface, then place the upper box and fill in the molding sand. 100~120N / cm 2 Mechanical compaction is carried out under pressure, and the mold can be opened to fit the sand box;

[0024] (b) Making the lower flask: turn the fixed mold 180°, and repeat step (a) to get the lower flask;

[0025] (c) Core making: install the core box matching the traction wheel on the core shooter, open the mold to clean the core box and spray the release ...

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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. Such as 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...

Claims

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Application Information

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IPC IPC(8): B22C9/28B22C9/08
Inventor 丁永良王旸
Owner SUZHOU TORIN MACHINERY CASTING
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