Casting technology for hub

A casting process and wheel hub technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of wheel hub fracture, bulldozer paralysis, quenching and tempering treatment, etc., so as to ensure the use performance and solve casting shrinkage and cracks The effect of quality problems

Active Publication Date: 2017-01-04
TIANJIN CONSTR MACHINERY FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now, due to the casting shrinkage porosity and cracks at the root of the hub flange, the hub breaks and the bulldozer is paralyzed, which affects normal use; Blocky, causing great quality problems

Method used

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  • Casting technology for hub
  • Casting technology for hub

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0026] (1) Pattern design: the design of the hub casting system, 1 straight gate, size φ40mm; 1 horizontal gate, size 45×34×45(mm); 1 inner gate; size: 55×45× 40(mm); wheel hub sand core design: the air channel is set in the middle of the sand core, with a size of φ20mm; the middle and lower part of the sand core is equipped with an anti-crack hole, and the foam plastic gasification mold is placed in the core making, and the size is 60×90×90(mm); the wheel hub Riser and chiller design: 1 riser: φ285×φ330×200 (mm), 4 riser air passages are evenly distributed on the hub riser, with a size of φ50mm; 4 external chillers are evenly distributed on the hub flange In the end hole sand core.

[0027] (2) Sand mold making: modeling adopts sodium silicate sand CO2 method, 100 parts of quartz sand, clay sand, 3 parts of clay, 1 part of bentonite, 5 parts of asbestos powder, 1.5 parts of wood chips...

Embodiment 2

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

[0034] (1) Pattern design: the design of the hub casting system, 1 straight gate, size φ40mm; 1 horizontal gate, size 45×34×45(mm); 1 inner gate; size: 55×45× 40(mm); wheel hub sand core design: the air channel is set in the middle of the sand core, with a size of φ20mm; the middle and lower part of the sand core is equipped with an anti-crack hole, and the foam plastic gasification mold is placed in the core making, and the size is 60×90×90(mm); the wheel hub Riser and chiller design: 1 riser: φ285×φ330×200 (mm), 4 riser air passages are evenly distributed on the hub riser, with a size of φ50mm; 4 external chillers are evenly distributed on the hub flange In the end hole sand core.

[0035] (2) Sand mold making: modeling adopts sodium silicate sand CO2 method, 100 parts of quartz sand, clay sand, 5 parts of clay, 2 parts of bentonite, 5 parts of asbestos powder, 1.5 parts of wood chip...

Embodiment 3

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

[0042](1) Pattern design: the design of the hub casting system, 1 straight gate, size φ40mm; 1 horizontal gate, size 45×34×45(mm); 1 inner gate; size: 55×45× 40(mm); wheel hub sand core design: the air channel is set in the middle of the sand core, with a size of φ20mm; the middle and lower part of the sand core is equipped with an anti-crack hole, and the foam plastic gasification mold is placed in the core making, and the size is 60×90×90(mm); the wheel hub Riser and chiller design: 1 riser: φ285×φ330×200 (mm), 4 riser air passages are evenly distributed on the hub riser, with a size of φ50mm; 4 external chillers are evenly distributed on the hub flange In the end hole sand core.

[0043] (2) Sand mold making: modeling adopts sodium silicate sand CO2 method, 100 parts of quartz sand, clay sand, 6 parts of clay, 3 parts of bentonite, 5 parts of asbestos powder, 1.5 parts of wood chips...

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Abstract

The invention belongs to the casting field and specifically relates to a casting technology for a hub. The casting technology comprises the following steps of (1) designing of a mold sample, specifically, designing of a pouring system, a sand core, dead heads and chilling blocks, (2) sand mold manufacturing, specifically, mold making through a sodium water-glass sand CO2 method and core making through a self-hardening cold core box method, (3) smelting, (4) pouring, (5) cooling and (6) annealing. According to the casting technology for the hub, the problem that the annealed structure of the hub does not reach the standard is solved, the quality problems of shrinkage porosity and cracks in hub flange plate root casting are solved, and the using performance of the hub is ensured. An attached figure is the diagrammatic figure for the casting technology for the hub, and the description of the figure is as following: 1, a straight sprue; 2, dead head air passages; 3, the dead heads; 4, a sand core air passage; 5, the sand core; 6, castings; 7, a transverse sprue; 8, an inner sprue; 9, the chilling blocks; and 10, an anti-freezing hole.

Description

technical field [0001] The invention belongs to the field of casting, and in particular relates to a casting process of a wheel hub. Background technique [0002] The hub is a part of the final drive of the bulldozer, connecting the ring gear and the sprocket to ensure the normal operation of the walking system. Now, due to the casting shrinkage porosity and cracks at the root of the hub flange, the hub breaks and the bulldozer is paralyzed, which affects normal use; Blocky, causing a great quality hidden danger. Contents of the invention [0003] The object of the present invention is to solve the above technical problems and provide a casting process for a wheel hub. [0004] The present invention is realized through the following technical solutions: [0005] A casting process for a wheel hub, comprising the following steps: [0006] (1) Appearance design: design of hub pouring system, sand core, riser and cold iron. [0007] (2) Sand mold making: Sodium silicate s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/28B22C9/02B22C1/00B22C9/08C21D9/34
Inventor 薛玉峰王秀红杨娟程冠安久战李亦男
Owner TIANJIN CONSTR MACHINERY FACTORY
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