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Method for casting brake disc for high-speed locomotive

A technology for high-speed locomotives and brake discs, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., and can solve the problems of insufficient production efficiency, low production efficiency, and small unit weight.

Active Publication Date: 2013-01-02
KOCEL EQUIP
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  • Abstract
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  • Application Information

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Problems solved by technology

In addition, the quality inspection requirements are high: the plane error of the disc is within 1.5mm, and the tolerance is within 1.5mm; the current casting process for producing this piece adopts a single-box molding process, that is, one piece is produced per box, and the process belongs to the relatively simple gray iron casting process.
The existing technology is to use the traditional single-box molding process, that is, one piece is produced per box, and the production efficiency is low
This product is a consumable product, and the annual demand is relatively large. When the annual market demand is greater than 10,000 pieces, the production efficiency cannot meet the demand if the single-piece production method is adopted.
In addition, due to the structural characteristics of the product, the outer contour is large, the thickness is thin, and the unit weight is small. The ratio of sand to iron produced by single box molding is very high, and the cost is wasted seriously.

Method used

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Experimental program
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Embodiment Construction

[0023] A method for casting a brake disc for a high-speed locomotive is characterized in that it comprises the following steps:

[0024] a. Solidification simulation: convert the two-dimensional drawing into a three-dimensional drawing and perform mold filling and solidification simulation in the simulation software, so that the flow status of molten iron during the filling process, the temperature change during the solidification process after filling, and the place where shrinkage defects appear can be obtained;

[0025] b. Design sand core: under the premise of ensuring the minimum sand consumption, the outline size of the sand core should be as small as possible and ensure that the sand core can pass through the surface dry kiln;

[0026] c. Core box production: cast iron material is used to form a fall-off structure;

[0027] d. Core making: Place the sprue porcelain tube 5mm below the sand scraping surface, compact it, and perform compaction operation while running sand,...

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Abstract

The invention relates to a casting method, in particular to a method for casting a brake disc for a high-speed locomotive. The method is characterized by comprising the following steps of: solidification simulation, design of a sand core, production of a core box, production of a core, assembly of the core, melting, pouring, shake-out and clearing; and the box-free core-lapping combined pouring way is adopted, 4-8 pieces can be shaped and poured once, the yield of 30-60 pieces per day can be satisfied, the process product quality is high, the production efficiency is high, and the production cost is low.

Description

technical field [0001] The invention relates to a casting method, in particular to a casting method of a brake disc for a high-speed locomotive. Background technique [0002] The friction ring is a part of the mainline locomotive brake device. This product is a disc body with an outline size of φ1050*28mm. One side is covered with 80 ribs with a thickness of 8mm and a height of 30mm. The other side is a large flat surface; the material is low alloy gray cast iron. In addition, the quality inspection requirements are high: the plane error of the disc is within 1.5mm, and the tolerance is within 1.5mm; the current casting process for producing this piece adopts a single-box molding process, that is, one piece is produced per box, and the process belongs to the relatively simple gray iron casting process. . The prior art is to use the traditional single box molding process, that is, one piece is produced per box, and the production efficiency is low. This product is a consuma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/10B22C9/08
Inventor 梁宝斌原晓雷徐国强王向阳陆建斌曲泽茂王蒙陈洪涛
Owner KOCEL EQUIP
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