Method for casting brass ware

A technology of copperware and components, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of difficult separation of products and cores, easy deformation and damage of wooden molds, and solve the problem of excessive cooling of copper liquid , low cost, easy separation effect

Inactive Publication Date: 2008-10-29
ZHEJIANG WORLD BRASS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a casting method for copper parts, aiming at the defects that the wooden mold of the existing casting process is easily deformed and damaged; relatively expensive metal materials are used as the core; and the product and the core are not easy to separate. Metal outer mold, not easy to deform and damage; and low cost, easy to separate core and product

Method used

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  • Method for casting brass ware

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Embodiment 1

[0023] like figure 1 The shown flow process, a casting method of a copper device, comprises the following steps in sequence:

[0024] 1. Production of metal exterior molds:

[0025] According to the shape of the product, the machining center is used to make the metal shape mold of the product. According to the shape and size of the product, multiple products can be made in one pair of molds. The size of the mold needs to be increased on the basis of the original size of the casting according to the shrinkage rate, and the machining allowance is reserved for the table that needs to be cut. When making sand molds, it is necessary to consider how to separate the upper and lower sand boxes to take out the shape mold, and also consider where the copper water flows in, and how to fill the cavity to obtain high-quality castings. The metal exterior mold is divided into two sides, and the two sides are the symmetrical halves of the product. If there is a trademark on the product, it ...

Embodiment 2

[0051] During the heating and melting process of copper, the temperature of copper melting is 1250° C., and the temperature of pouring is 1100° C. The other technological process is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0053] During the heating and melting process of copper, the temperature of copper melting is 1290°C, and the temperature of pouring is 1160°C.

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Abstract

The invention pertains to the mechanical technology field and relates to a method for casting a copper device. The method for casting the copper device includes the following steps: A. manufacturing a metal epimorph and a core: metal blank is adopted for manufacturing the metal epimorph, after fine sand and colophony are mixed together, the core is manufactured in a molding core pressing machine; B. molding: an upper sand mold and a lower sand mold are manufactured, a sprue gate is reserved, and the upper sand mold and the lower sand mold are carried out die assembly; C. processing of copper heating and melting and pouring; copper is heated and melted to liquid condition, then the copper liquid is poured in the sand mold; D. cooling and outbox: the mould in which the copper liquid is poured is gradually cooled in the still station at the room temperature, and the sprue and offal of copper ashes are taken out and removed; E. cleaning off sand: after the step of outbox, the semi-finished product is put into a platen for cleaning off the external sand, and the excrescent fins are polished. The metal epimorph is adopted in the method for casting a copper device, so that deformation and damage can not be caused easily; the cost is low, and the core and the product can be separated easily.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a casting method for copper devices. Background technique [0002] Sand casting is a traditional casting process that uses fine sand as the main molding material to make molds. Sand molds generally adopt gravity casting. The original casting process has low accuracy in appearance and size, and the size of the internal core cannot be guaranteed, and the adaptability of sand casting is very wide, small pieces, large pieces, simple pieces, complex pieces, single pieces, and large batches can be used. The shape molds used in sand casting were mostly made of wood in the past, commonly known as wood molds. The wooden formwork is used as the external mold, and the wooden formwork is easily deformed and damaged. And the size of the wooden mold is mainly determined by the worker's manufacturing technology, and its consistency and stability are relatively low. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D21/00B22C7/00B22C9/02B22C9/08
Inventor 卓旦春
Owner ZHEJIANG WORLD BRASS
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