A kind of high wear-resistant steel and its application
A high wear-resistant, steel technology, applied in mining equipment, earthwork drilling, tunnels, etc., can solve problems such as short service life of cutter rings, influence on project progress, and increase in excavation costs, so as to ensure project progress, reduce excavation costs, Mining cost reduction effect
Active Publication Date: 2017-10-13
MIANYANG XINUOTE MINING EQUIP MFG
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problem that H13 is currently used to make hob cutter rings. The cutter rings have a relatively short service life and need to be replaced after 2-3 meters of excavation, resulting in increased excavation costs, delayed excavation progress, and seriously affecting the progress of the project. , providing a high wear-resistant steel and its application
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[0044] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0045] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0046] Table 1 is a comparison table of chemical composition between the present invention and the existing steel H13.
[0047] Table 1 Comparison of chemical composition between the high wear-resistant steel of the present invention (ie DK48) and the existing steel H13
[0048]
[0049] Table 2 is a comparison table of wear resistance and toughness between the steel of the present invention (the designation in the table is DK48) and the existing steel H13. Among them, 10 is the highest standard ...
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The invention discloses a high wear-resistant steel material and its application, aiming to solve the problem that H13 is currently used to make hob cutter rings. The service life of the cutter rings is relatively short, and it needs to be replaced after 2-3 meters of excavation, resulting in increased excavation costs. The progress is delayed and seriously affects the progress of the project. The high wear-resistant steel of the present invention includes the following components in weight percentage: C: 0.95-1.30; Si: 0.95-1.60; Mn: 0.20-0.55; P: ≤0.030; S: ≤0.030; Cr: 6.50-9.00; Mo : 1.10~1.80; V: 1.50~3.50; the rest are iron and unavoidable impurities. The present invention provides a new steel material which is characterized by high wear resistance. The equipment manufactured by adopting the steel material of the invention has the characteristics of high wear resistance and high application value. The cutter ring made of the steel material of the invention has the characteristics of high wear resistance, and has important economic value and social value for prolonging the service life of the cutter ring, increasing the number of excavation meters, and ensuring the progress of excavation.
Description
technical field [0001] The invention relates to the field of iron and steel, in particular to a high wear-resistant steel and its application. Background technique [0002] With the continuous acceleration of urbanization in countries all over the world (especially developed countries), underground facilities such as subways have been put into use in large quantities, and the prospect of underground space development and utilization is very broad. The construction of underground space projects has gradually increased, and shield boring machines have been widely used in projects such as underground rail transit and tunnels. Under the background of the rapid development of non-excavation technology, along with it, the demand for shield machines at home and abroad is increasing day by day. [0003] At present, my country has been able to independently develop subway shield equipment, and domestic shield machines and accessories have gradually replaced imported products and beg...
Claims
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IPC IPC(8): C22C38/34C22C38/24E21D9/08
Inventor 蒲红
Owner MIANYANG XINUOTE MINING EQUIP MFG