A kind of production method of steel-copper composite ball
A production method and technology of composite balls, applied in the field of casting, can solve the problems of mixing, uneven wall thickness of steel balls, incomplete melting of steel balls and copper alloy balls, etc., to achieve the effect of ensuring thickness and improving quality
Active Publication Date: 2019-10-29
鞍钢矿山机械制造有限公司
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Problems solved by technology
Problems that are likely to arise from this casting method: uneven wall thickness of steel balls, incomplete melting of steel balls and copper alloy spheres, complete mixing of copper alloy body melting and steel balls
Method used
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Embodiment
[0022] See figure 1 , figure 2 , casting a composite ball with an outer diameter of 60mm, copper ball 1 with a diameter of 35mm and made of brass. The specific production method is:
[0023] 1) Use furan resin sand to make sand molds, open side pouring, open inner runners 5 on both sides of the cavity, the diameter of which is less than 12mm, and open a riser 7 on the top of the cavity, and the diameter of the bottom of the riser 7 is 10mm;
[0024] 2) The copper ball 1 is positioned to ensure that the copper ball 1 is centered after pouring, and it is supported by a cone spring 4. The selection of spring materials must ensure that the support material is completely melted and sufficiently supported, so 65Mn, steel wire;
[0025] At the initial position of copper ball 1, the specific gravity of copper is 8.9 higher than that of molten steel 7.0, so the center of copper ball 1 is higher than the center of steel ball 3 (cavity center) D=3-5mm;
[0026] 3) The pouring temper...
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Abstract
The invention relates to a production method of a steel-copper composite ball. The production method comprises the following steps that (1) a sand mold is manufactured, furan resin sand is adopted, aspherical cavity is formed in the sand mold, the cavity is externally provided with inner runners extending from the middle to the two sides of the cavity, the inner runners communicate with outside straight runners, and the top of the cavity is provided with a riser; (2) the bottom of the interior of the sand mold is provided with a conical spring, a copper ball is placed on the conical spring, and the effect that the center of the copper ball is 3-5 mm higher than that of a steel ball is ensured; and (3) the molten steel pouring temperature is controlled to be 1460-1520 DEG C. The productionmethod has the advantages that the copper ball is supported through the conical spring, and the steel ball can completely wrap the copper ball; and before pouring, through the position where the conical spring supports the copper ball, the center of the copper ball is 3-5mm higher than that the preset center of the steel ball, the center deviation of the copper ball is within + / -3mm, the thickness of the steel ball is ensured, the effect that copper liquid does not flow out in the using process of the composite ball is guaranteed, and the quality of the composite ball is improved.
Description
technical field [0001] The invention belongs to the technical field of casting, and relates to a production method of a steel-copper composite ball. Background technique [0002] In the special technology of utilizing the waste heat of smelting slag, composite balls are used as the heat-absorbing and releasing medium. Conventional composite balls are mainly in the form of inner copper and outer steel. Using the heat transfer and heat storage capacity of copper, the heat of molten slag is converted and utilized through composite balls. Therefore, the quality of composite balls becomes the top priority of slag waste heat recovery technology. See figure 1 , The steel-copper composite ball structure is: the central part is a copper alloy sphere, the outer part is a steel ball, and the melting zone is between the two. Copper alloy spheres can be produced by rolling, while the outer steel balls are produced by casting. This casting method is prone to problems: uneven wall thick...
Claims
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IPC IPC(8): B22D19/16B22D19/08
CPCB22D19/08B22D19/16
Inventor 崔广久高延群肖海玲付崇春
Owner 鞍钢矿山机械制造有限公司