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Casting process of sprocket wheel hub

A casting process and wheel hub technology is applied in the field of casting process of sprocket wheel hub, which can solve the problems of bulldozer paralysis, hidden quality problems, difficult to eliminate by quenching and tempering treatment, etc., so as to solve the quality problems of casting shrinkage and cracks, and ensure the effect of using performance.

Active Publication Date: 2017-01-11
TIANJIN CONSTR MACHINERY FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now, due to casting shrinkage and cracks at the inner tooth root of the sprocket hub, the sprocket hub is broken and the bulldozer is paralyzed, which affects normal use; The body becomes flaky or even blocky, causing great quality hidden dangers

Method used

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  • Casting process of sprocket wheel hub
  • Casting process of sprocket wheel hub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, a casting process for a sprocket hub includes the following steps:

[0026] (1) Pattern design: sprocket hub casting system design, 1 straight gate, size φ40mm; 1 horizontal gate, size 40×30×35(mm); 2 inner gates; size: 40× 30×30(mm); sprocket wheel hub sand core design, air channel is set in the middle of the sand core, the size is φ30mm; the middle and lower part of the sand core is equipped with anti-crack holes, and the foam plastic gasification mold is put into the core making, the size is 80×100×100( mm); sprocket hub riser and cold iron design: 1 large riser, size φ325×φ295×200 (mm), 4 large riser air passages evenly distributed on the hub riser, size φ50mm; small riser 6 pieces, size (95*160)×(85*150)×150(mm), 6 small riser air passages, size φ30mm; 4 pieces of external cold iron are evenly distributed in the inner hole sand core at the small end of the sprocket hub .

[0027] (2) Sand mold making: modeling adopts sodium silicate sand CO2 m...

Embodiment 2

[0033] In this embodiment, a casting process for a sprocket hub includes the following steps:

[0034] (1) Pattern design: sprocket hub casting system design, 1 straight gate, size φ40mm; 1 horizontal gate, size 40×30×35(mm); 2 inner gates; size: 40× 30×30(mm); sprocket wheel hub sand core design, air channel is set in the middle of the sand core, the size is φ30mm; the middle and lower part of the sand core is equipped with anti-crack holes, and the foam plastic gasification mold is put into the core making, the size is 80×100×100( mm); sprocket hub riser and cold iron design: 1 large riser, size φ325×φ295×200 (mm), 4 large riser air passages evenly distributed on the hub riser, size φ50mm; small riser 6 pieces, size (95*160)×(85*150)×150(mm), 6 small riser air passages, size φ30mm; 4 pieces of external cold iron are evenly distributed in the inner hole sand core at the small end of the sprocket hub .

[0035] (2) Sand mold making: modeling adopts sodium silicate sand CO2 m...

Embodiment 3

[0041] In this embodiment, a casting process for a sprocket hub includes the following steps:

[0042] (1) Pattern design: sprocket hub casting system design, 1 straight gate, size φ40mm; 1 horizontal gate, size 40×30×35(mm); 2 inner gates; size: 40× 30×30(mm); sprocket wheel hub sand core design, air channel is set in the middle of the sand core, the size is φ30mm; the middle and lower part of the sand core is equipped with anti-crack holes, and the foam plastic gasification mold is put into the core making, the size is 80×100×100( mm); sprocket hub riser and cold iron design: 1 large riser, size φ325×φ295×200 (mm), 4 large riser air passages evenly distributed on the hub riser, size φ50mm; small riser 6 pieces, size (95*160)×(85*150)×150(mm), 6 small riser air passages, size φ30mm; 4 pieces of external cold iron are evenly distributed in the inner hole sand core at the small end of the sprocket hub .

[0043] (2) Sand mold making: modeling adopts sodium silicate sand CO2 m...

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Abstract

The invention belongs to the field of casting, in particular to a casting process of a sprocket wheel hub. The casting process comprises the following steps: (1) design of a mold sample: design of a pouring system, a sand core, a riser and a chilling block; (2) production of a sand mold: modeling adopts a sodium-silicate sand CO2 method, and core making adopts a self-hardening cold box process; (3) smelting; (4) pouring; (5) cooling; and (6) annealing. According to the casting process, the problem that the annealed structure of the sprocket wheel hub is not up to standard is solved; the quality problems of casting shrinkage and cracks at the root of a flange plate of the sprocket wheel hub are solved; and the use performance of the sprocket wheel hub is guaranteed. The figure is a schematic diagram of the casting process of the sprocket wheel hub, and the marks in the figure are as follows: 1-sand core air passage, 2-large riser air passage, 3-large riser, 4-small riser air passage, 5-small riser, 6-sprue, 7-casting, 8-chilling block, 9-anti-crack hole, 10-sand core, 11-ingate, and 12-cross gate.

Description

technical field [0001] The invention belongs to the field of casting, and in particular relates to a casting process of a sprocket wheel hub. Background technique [0002] The sprocket hub is a part of the final drive components of the bulldozer, which connects the hub and the crawler walking system to ensure the normal operation of the walking system. Now, due to casting shrinkage and cracks at the inner tooth root of the sprocket hub, the sprocket hub is broken and the bulldozer is paralyzed, which affects normal use; The body becomes flaky or even blocky, causing great quality hidden dangers. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned technical problems and provide a casting process for a sprocket hub. [0004] The present invention is realized through the following technical solutions: [0005] A casting process for a sprocket hub, comprising the following steps: [0006] (1) Appearance design: sprocket hu...

Claims

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Application Information

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IPC IPC(8): B22C9/28B22C9/02B22C9/08B22C1/00C22C33/06C21D9/34C21D1/26
Inventor 薛玉峰程冠王秀红杨娟安久战李亦男
Owner TIANJIN CONSTR MACHINERY FACTORY
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