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Cast casting machining process

A processing technology and technology for casting castings, which is applied in the field of foundry processing and can solve the problems of mold sand separation, falling, and pits on the surface of castings.

Active Publication Date: 2021-02-05
梅州市福德金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When casting castings, it is necessary to make the molding sand mold of the casting first, and then pour the high-temperature liquid metal into the molding sand mold. However, when the existing method is making the molding sand, part of the molding sand is often disassembled or separated from the upper and lower molds. drop off
Be careful when placing the separated upper and lower molds on the ground, otherwise the impact and vibration will cause the deformation of the sand mold, and the surface of the final casting will be pitted, which will make the subsequent surface cleaning more difficult
Moreover, the existing method of pouring sand is directly dumped on the mold. Although it is convenient, it will cause most of the molding sand to slip, reducing the utilization rate, and it will also make the surrounding working environment worse.

Method used

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  • Cast casting machining process
  • Cast casting machining process

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A casting casting process, characterized in that: comprising the following steps:

[0028] (1) Smelting: Melt the steel in an electric furnace. When the temperature rises to 1600°C, add a refining agent and refine for 15 minutes to obtain molten steel. The sulfur content in the molten steel is less than 0.02%, the phosphorus content is less than 0.02%, and the carbon content is 0.05%, silicon content 0.2%, manganese content 0.35%, nickel content 0.15%;

[0029] (2) Mold preparation: Prepare the casting samples, put the casting samples into the sand mold, process the sand mold through the mold processing table, bake the sand mold at a temperature of 600°C for 10 minutes, and then cool down to 350°C for standby;

[0030] (3) Pouring: pour the molten steel in (1) into the sand mold in (2), the pouring temperature is 1450°C, and the pouring time is 25s. After the pouring is completed, keep it warm for 20 minutes;

[0031] (4) Cooling: After cooling to room temperature, tak...

Embodiment 2

[0040] (1) Smelting: Melt the steel in an electric furnace. When the temperature rises to 1700°C, add a refining agent and refine for 20 minutes to obtain molten steel. The sulfur content in the molten steel is less than 0.02%, the phosphorus content is less than 0.02%, and the carbon content is 0.08%, silicon content 0.25%, manganese content 0.45%, nickel content 0.25%;

[0041] (2) Mold preparation: prepare casting samples, put the casting samples into the molding sand mold, process the sand mold through the mold processing table, bake the sand mold at a temperature of 700°C for 15 minutes, and then cool down to 380°C for standby;

[0042] (3) Pouring: pour the molten steel in (1) into the sand mold in (2), the pouring temperature is 1550°C, and the pouring time is 30s. After the pouring is completed, keep it warm for 25 minutes;

[0043] (4) Cooling: After cooling to room temperature, take out the formed casting, clean the surface, and get the casting after polishing.

[0...

Embodiment 3

[0047] (1) Smelting: Melt the steel in an electric furnace. When the temperature rises to 1650°C, add a refining agent and refine for 17 minutes to obtain molten steel. The sulfur content in the molten steel is less than 0.02%, the phosphorus content is less than 0.02%, and the carbon content is 0.07%, silicon content 0.23%, manganese content 0.40%, nickel content 0.20%;

[0048] (2) Mold preparation: prepare casting samples, put the casting samples into the molding sand mold, process the sand mold through the mold processing table, bake the sand mold at a temperature of 650°C for 13 minutes, and then cool down to 365°C for standby;

[0049] (3) Pouring: pour the molten steel in (1) into the sand mold in (2), the pouring temperature is 1500°C, and the pouring time is 27s. After the pouring is completed, keep it warm for 23 minutes;

[0050] (4) Cooling: After cooling to room temperature, take out the formed casting, clean the surface, and get the casting after polishing.

[0...

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Abstract

The invention discloses a cast casting machining process. The process includes the steps of (1) smelting; (2) mold preparation: preparing a casting sample, putting the casting sample into a molding sand mold, and machining through a mold machining table to obtain a sand mold; (3) pouring; and (4) cooling. The mold machining table comprises a box body, a molding sand cavity formed in the box body,a conveying pipe arranged on the molding sand cavity, an adjusting component arranged on the conveying pipe, a supporting plate slidably arranged on the box body, a first molding sand mold arranged onthe supporting plate, a machining plate rotatably arranged on the box body, a second molding sand mold arranged on the machining plate, and a grabbing component symmetrically arranged on the machining plate. According to the cast casting machining process, when the sand molds are machined, through the mold machining equipment, the use amount of molding sand can be reduced, the mold production number is increased, vibration generated when the molds are turned over is reduced, and the stability and the integrity of sand mold forming are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of casting and processing, and in particular relates to a casting and casting processing technology. Background technique [0002] When casting castings, it is necessary to make the molding sand mold of the casting first, and then pour the high-temperature liquid metal into the molding sand mold. However, when the existing method is making the molding sand, part of the molding sand is often disassembled or separated from the upper and lower molds. to break away, to drop. Be careful when placing the separated upper and lower molds on the ground, otherwise the impact and vibration will cause the deformation of the sand mold, and the surface of the final casting will be pitted, which will make the subsequent surface cleaning more difficult. And the existing method of filling sand all is to pour directly on the mould, although it is convenient, it will make most of the molding sand slide down, reduce the utiliz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C1/00B22C15/02B22C19/02C22C38/02C22C38/04C22C38/08C22C33/04
CPCB22C9/02B22C1/00B22C15/02B22C19/02C22C38/02C22C38/04C22C38/08C22C33/04Y02P10/20
Inventor 周明洁
Owner 梅州市福德金属制品有限公司
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