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Preparation process of elbow of wear resisting pump truck

A preparation process and technology of wear-resistant pumps, which are applied in the field of preparation process of elbows of wear-resistant pump trucks, can solve the problems of easy wear of conveying pipes, low tensile strength and wear resistance, and reduced conveying efficiency, so as to improve utilization The effect of improving rate and production efficiency, changing performance and structure density, and reducing heat treatment cost

Inactive Publication Date: 2020-02-25
湖北谷城锐丰机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composed of a pump body and a conveying pipeline, it is an important mechanical device to improve project quality, speed up construction, and improve work efficiency in engineering construction; during the process of conveying concrete by a cement pump truck, due to the characteristics of the concrete itself, the conveying pipeline is relatively easy Abrasion, especially at the pipe elbow, is subject to greater impact force from concrete and is more prone to wear and tear. Frequent replacement of worn pipe elbows will not only reduce the transmission efficiency, but also lead to increased costs and waste of resources
[0003] With the rapid development of modern industry, people have higher and higher requirements for the reliability of pipe fittings. However, the existing domestic pipe elbows are all made by traditional production methods, which often lead to uneven carbonization, low densification, and poor sintering performance. Therefore, the tensile strength and wear resistance of the products produced are extremely low, resulting in a high replacement rate and seriously affecting the conveying efficiency of concrete
At present, although some imported pipe fittings and elbows have good wear resistance, they are expensive, and the high cost affects the benefit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation process for the elbow of a wear-resistant pump truck. The components of iron, carbon, silicon, manganese, phosphorus, sulfur, titanium, nickel, chromium, and copper are all prepared in parts by weight, placed in a casting furnace, and then melted. The metal material is poured into the mold, solidified and cooled, the castings are taken out, the pouring risers and burrs are cleaned and removed, heat treatment, inspection and storage;

[0029] The components per 100 parts by weight are: 0.35 parts of carbon, 0.27 parts of rare earth silicon, 1.5 parts of manganese, 0.04 parts of phosphorus, 0.03 parts of sulfur, 2 parts of titanium, 7 parts of nickel, 0.2 parts of copper, 4 parts of chromium, and more The amount is Fe;

[0030] In the melting process, the batch order of each component is as follows: 1) silicon, manganese; 2) titanium, nickel, chromium; 3) other remaining components; the time interval of each batch is 30 min, and the batch is stirred evenly after ...

Embodiment 2

[0038] A preparation process for the elbow of a wear-resistant pump truck. The components of iron, carbon, silicon, manganese, phosphorus, sulfur, titanium, nickel, chromium, and copper are all prepared in parts by weight, placed in a casting furnace, and then melted. The metal material is poured into the mold, solidified and cooled, the castings are taken out, the pouring risers and burrs are cleaned and removed, heat treatment, inspection and storage;

[0039] The components per 100 parts by weight are: 0.55 parts of carbon, 4.37 parts of rare earth silicon, 5 parts of titanium, 10 parts of nickel, 0.4 parts of copper, 5.5 parts of chromium, and Fe as the balance.

[0040] In the melting process, the batch order of each component is as follows: 1) silicon, manganese; 2) titanium, nickel, chromium; 3) other remaining components; the time interval of each batch is 30 min, and the batch is stirred evenly after feeding.

[0041] The heat treatment includes the following steps:

[0042] ...

Embodiment 3

[0048] A preparation process for the elbow of a wear-resistant pump truck. The components of iron, carbon, silicon, manganese, phosphorus, sulfur, titanium, nickel, chromium, and copper are all prepared in parts by weight, placed in a casting furnace, and then melted. The metal material is poured into the mold, solidified and cooled, the castings are taken out, the pouring risers and burrs are cleaned and removed, heat treatment, inspection and storage;

[0049] The components per 100 parts by weight are: 0.45 parts carbon, 2.5 parts rare earth silicon, 0.75 parts manganese, 0.02 parts phosphorus, 0.015 parts sulfur, 3.5 parts titanium, 8.5 parts nickel, 0.3 parts copper, 5 parts chromium, and more The amount is Fe.

[0050] In the melting process, the batch order of each component is as follows: 1) silicon, manganese; 2) titanium, nickel, chromium; 3) other remaining components; the time interval of each batch is 30 min, and the batch is stirred evenly after feeding.

[0051] The h...

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PUM

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Abstract

The invention discloses a preparation process of an elbow of a wear resisting pump truck, and belongs to the technical field of metal material casting. The preparation process comprises the followingsteps of preparing the components of iron, carbon, silicon, manganese, phosphorus, sulfur, titanium, nickel, chromium and copper according to the parts by weight, putting the components in a casting furnace, then pouring the molten metal material into a mould, conducting solidification cooling, taking out the casting, cleaning and removing risers and burrs, conducting heat treatment, and conducting inspection and warehousing. The preparation process has a wide range of application, can cover most of the large-walled thick castings of carbon manganese steel, is beneficial to a large heat treatment furnace and can improve the utilization rate and production efficiency of equipment.

Description

Technical field [0001] The invention relates to the technical field of metal material casting, in particular to a preparation process of a wear-resistant pump truck elbow. Background technique [0002] The concrete pump truck is a machine that uses pressure to continuously transport concrete along the pipeline. Composed of a pump body and a conveying pipeline, it is an important mechanical appliance for improving the quality of the project, accelerating the construction speed, and improving work efficiency. The cement pump truck conveying pipeline is easier to convey due to the characteristics of the concrete in the process of conveying water and concrete. Abrasion, especially at the pipe elbow, is more impacted by concrete and is more prone to wear. Frequent replacement of worn pipe elbows not only reduces transportation efficiency, but also leads to increased costs and waste of resources. [0003] With the rapid development of modern industry, people have higher and higher requi...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/50C22C33/06C21D1/28
CPCC21D1/28C21D2211/009C22C33/06C22C38/005C22C38/02C22C38/04C22C38/42C22C38/50
Inventor 刘俊峰游志平许朝安陈琨赵华军
Owner 湖北谷城锐丰机械有限公司
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