Process for producing concrete pump elbow by using lost foam
A technology of lost foam casting and concrete pump, which is applied in the direction of manufacturing tools, metal processing equipment, casting molding equipment, etc. It can solve the problems of long production cycle of concrete pump bending, hard to find industrial workers, and bad baking environment, etc. Product competitiveness, the realization of mechanized operations, and the effect of shortening cleaning hours
Inactive Publication Date: 2013-03-06
SHANXI XINGYUAN PRECISION CASTING
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Problems solved by technology
The appearance of the products produced by this process is beautiful, but the production efficiency is low. Taking the shell made of silica sol cement as an example, the basic process flow of investment casting precision casting (attached Figure 1), due to the low molding efficiency, the number of sand hanging is many , the baking environment is harsh, so the production cycle of the concrete pump elbow is long and the production efficiency is low. Due to its complicated process and high requirements for workers, industrial workers are not easy to find.
Method used
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[0024] The present invention will be described in further detail below in combination with specific embodiments. Take the R275*90° elbow pipe as an example for illustration.
[0025] 1. First select the original beads and retest them.
[0026] 2. Pre-expanding the selected original beads. This process must use imported copolymer materials, because there are few impurities, so there is no carbon defect. To make the mold is to process the required mold according to the selected foaming raw material and alloy composition range according to the reduction ratio of 4%.
[0027] 3. After pre-foaming the original beads, carry out aging treatment. This process must use a high-pressure steam boiler with a pressure greater than 0.7Mpa. If a low-pressure boiler is used, the mold produced will have deviations in size.
[0028] 4. Combine the pouring system according to the requirements. When bonding the model and the sprue, it is recommended to use the cold glue produced by Wanbao Compan...
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Abstract
The invention relates to a lost foam casting technology, and especially relates to a process for producing a concrete pump elbow by using lost foam. In current productions, due to substantial growth of fixed assets and infrastructure investment, market demands of construction materials such as cement is increased, and production and technology development of mechanical equipment such as concrete mixing transportation pump truck is promoted. The utilization amount of concrete pipelines, which is one of the important parts of pump trucks, is greatly increased, and an excellent environment is provided for concrete pump elbow development. The process provided by the invention comprises: a melting section, a mold preparing section, a template assembling and paint coating bake-drying section, and a shape casting section. With the process provided by the invention, mechanized operation can be realized, worker labor intensity can be minimized, and production efficiency can be maximized. Product competitiveness is improved, operating environment is improved, and sustainable development can be implemented. Energy consumption is reduced, carbon emission is reduced, and energy pressure is effectively relieved.
Description
【Technical field】 [0001] The invention relates to lost foam casting technology, in particular to a process for producing concrete pump elbows by using lost foam casting technology. 【Background technique】 [0002] In today's production, due to the substantial growth of fixed assets and infrastructure investment, the market demand for cement and other building materials has been expanded, and the production and technological progress of mechanical equipment such as pump trucks for concrete mixing and transportation have been promoted. As one of the important accessories of pump trucks, A large increase in the amount of concrete delivery pipelines provides an excellent environment for the development of concrete pump elbows. And the production of existing concrete pump wear-resistant pipe mostly adopts investment casting. The products produced by this process are beautiful in appearance, but the production efficiency is low. Taking the silica sol cement shell as an example, th...
Claims
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Login to View More IPC IPC(8): B22C9/04B22C9/22
Inventor 杨美玲杨友军姚玉平
Owner SHANXI XINGYUAN PRECISION CASTING