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Method for reducing caught casting of appearance of cast product

A technology of appearance and castings, which is applied in the direction of casting molds, casting mold components, casting molding equipment, etc., and can solve problems such as large impact force of slider inserts, mold sticking, casting strain, etc.

Inactive Publication Date: 2010-11-17
SHANGHAI CENSI AUTOMOBILE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the temperature of the molten aluminum is about 750°C and the speed is 40-70M / s, the impact force on the slider insert of the mold is very large. At the same time, due to the high affinity between the molten aluminum and the steel, the casting will appear pulled. Injury and sticking phenomenon

Method used

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with specific examples.

[0008] The original sprue where the mold directly washes the slider insert is changed to a ring-shaped runner, which greatly reduces the impact on the slider insert and effectively solves the casting strain and other problems.

[0009] Design elements:

[0010] Die casting weight: 1000 grams

[0011] Liquid aluminum density: 2.4g / cm2

[0012] Filling time: t = 0.01 x 42 = 0.16 seconds

[0013] According to the weight and complexity of the die casting, set the aluminum liquid filling gate speed V = 40 m / s (refer to the standard)

[0014] original design:

[0015] Inner gate area F1=30×2=60MM2

[0016] Punch diameter: 70MM

[0017] High speed: 3.5 m / s

[0018] Ingate speed V1=352×3.14×3.5 / 60

[0019] = 224 m / s

[0020] new design:

[0021] Inner gate area F1=344MM2

[0022] Punch diameter: 70MM

[0023] High speed: 3.5 m / s

[0024] Ingate speed V1=352×3.14×3.5 / 344 ...

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Abstract

The invention relates to a method for reducing caught casting on the appearance of a cast product, which comprises the step of changing a straight runner for directly scouring a slide block insert block into an annular runner so as to reduce the impact to the slide block insert block, wherein the annular runner is arranged beside a die and is in an arc shape to guide the slide block insert block. Compared with the prior art, the method has the advantages that: die castings produced by the conventional designed pouring system all have caught casting defects and cannot meet the quality requirement of customers at all; and the die castings produced by the changed pouring system do not have any caught casting defects.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a method for reducing the appearance of strain on castings. Background technique [0002] For the dismantling of the original mold gating system design, the aluminum liquid is driven by the punch of the die-casting machine, and when the aluminum liquid passes through the ingate, it directly impacts the slider insert of the mold. Since the temperature of the molten aluminum is about 750°C and the speed is 40-70M / s, the impact force on the slider insert of the mold is very large. At the same time, due to the high affinity between the molten aluminum and the steel, the casting will appear pulled. Injury and sticking phenomenon. Contents of the invention [0003] The purpose of the present invention is to provide a simple and feasible method for reducing the appearance of casting damage in order to overcome the above-mentioned defects in the prior art. [0004] The purpose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08
Inventor 李永兵
Owner SHANGHAI CENSI AUTOMOBILE PARTS
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