Preparation method of aluminum bronze composite casting valve plate

A composite casting, aluminum bronze technology, applied in the field of casting, can solve problems such as undisclosed composite casting process system, and achieve the effects of shortening pouring time, accurately controlling temperature difference, and positioning accurate

Inactive Publication Date: 2017-03-08
海安铸鑫金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent application did not disclose the specific process system of the composite casting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment relates to a method for preparing an aluminum-bronze composite casting valve plate. The preparation method consists of the following steps:

[0018] Step 1: Take the coated sand and inject it into the mold cavity of the valve plate, keep warm to make the coated sand solidify and form, and then remove the mold to obtain the coated sand shell; the injection uses a sand shooting machine, and the pressure of the sand shooting machine is controlled as 0.7Mpa; the temperature of the sand shooting machine is controlled at 205°C; the number of times the sand shooting machine shoots sand is 4 times, and the interval between each sand shooting is 4 seconds; before injecting into the valve plate cavity, the valve plate cavity is heated until the temperature is 175°C; the heat preservation is specifically: keep the temperature at 186°C for 15 seconds; the valve plate mold cavity is provided with an inner core that cooperates with the copper sleeve;

[0019] Step 2: ...

Embodiment 2

[0024] This embodiment relates to a method for preparing an aluminum-bronze composite casting valve plate. The preparation method consists of the following steps:

[0025] Step 1: Take the coated sand and inject it into the mold cavity of the valve plate, keep warm to make the coated sand solidify and form, and then remove the mold to obtain the coated sand shell; the injection uses a sand shooting machine, and the pressure of the sand shooting machine is controlled as 1.0Mpa; the temperature of the sand shot machine is controlled at 225°C; the number of sand shot by the sand shot machine is 4 times, and the interval between each sand shot is 5 seconds; before injecting into the valve plate cavity, the valve plate cavity is heated until the temperature is 185°C; the heat preservation is specifically: keep the temperature at 195°C for 25 seconds; the valve plate mold cavity is provided with an inner core that cooperates with the copper sleeve;

[0026] Step 2: Fix the copper sl...

Embodiment 3

[0031] This embodiment relates to a method for preparing an aluminum-bronze composite casting valve plate. The preparation method consists of the following steps:

[0032]Step 1: Take the coated sand and inject it into the mold cavity of the valve plate, keep warm to make the coated sand solidify and form, and then remove the mold to obtain the coated sand shell; the injection uses a sand shooting machine, and the pressure of the sand shooting machine is controlled as 0.8Mpa; the temperature of the sand shooting machine is controlled at 220°C; the number of times the sand shooting machine shoots sand is 4 times, and the interval between each sand shooting is 4 seconds; before injecting into the valve plate cavity, the valve plate cavity is heated until the temperature is 180°C; the heat preservation is specifically: keep the temperature at 190°C for 20 seconds; the valve plate mold cavity is provided with an inner core that cooperates with the copper sleeve;

[0033] Step 2: F...

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Abstract

The invention provides a preparation method for an aluminum bronze composite casting valve plate. The preparation method comprises the following steps that 1 precoated sand is fetched and injected into a valve plate die cavity, heat preservation is conducted so that the precoated sand is solidified and formed, drawing is conducted, and a shell mould of the precoated sand is acquired; 2 a copper bush is fixed to an inner core of the shell mould of the precoated sand, then mould assembling is conducted, and the copper bush is vertically clamped to form a pouring cavity; the component of the copper bush is aluminum bronze; 3 iron liquid is acquired, then the iron liquid is poured into the pouring cavity, and a casting piece is acquired; 4 the casting piece is fetched and cooled, shot blasting and finishing are conducted, and a precoated sand shell-shaped composite casting valve plate is acquired. The yield of the composite casting piece can reach over 96% through the adoption of the preparation technology of the aluminum bronze composite casting valve plate, and the preparation technology of the aluminum bronze composite casting valve plate solves the long-existing technical problem puzzling the mass production in the prior art.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a preparation method of a sand-covered aluminum-bronze composite casting valve plate. Background technique [0002] Coated sand is suitable for the production of complex and precise castings with high requirements, such as automobile engine cylinder blocks, etc. Coated sand can effectively eliminate various casting defects such as deformation and thermal cracking during the casting process, and the prepared casting surface It is smoother and more accurate in size, which can shorten the production cycle, save metal raw materials, reduce production costs, and it is easy to use automation in the production process to reduce the use of labor. The coated sand process is especially suitable for mass production of various small and medium-sized castings. [0003] Shell casting is a new type of casting process derived from the coated sand process. Specifically, it uses phenol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/16
CPCB22D19/16
Inventor 顾文元
Owner 海安铸鑫金属制品有限公司
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