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A kind of production method of highly wear-resistant tbm roadheader blade

A production method and technology of roadheader, applied in the direction of casting molding equipment, casting mold components, manufacturing tools, etc., can solve the problems of complex production process, high cost, low precision, etc., to improve utilization rate, improve hardness and wear resistance , Improve the effect of yield rate

Active Publication Date: 2018-05-18
凌远科技股份有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a production method of a highly wear-resistant TBM roadheader blade, which solves the technical problems of complex production process, high cost and low precision existing in the prior art

Method used

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  • A kind of production method of highly wear-resistant tbm roadheader blade
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  • A kind of production method of highly wear-resistant tbm roadheader blade

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Embodiment Construction

[0027] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0028] A kind of production method of high wear-resisting TBM roadheader blade of the present invention specifically comprises the following steps:

[0029] Step 1: Make a foam model of the spatula; according to the size requirements of the spatula, use foam to make the foam model 5 and the pouring riser 4 of the spatula;

[0030] Step 2: Prepare quartz powder slurry; add water to dilute water glass with a modulus of 2.8-3.0 to a density of 1.24-1.26g / cm 3 , then add 320 mesh quartz powder, the weight ratio is 1:1.3-1.4, use a mixer to carry out mechanical stirring, after stirring evenly, add 0.05wt% cleaning agent and 0.05wt% defoamer, continue stirring, stirring time 7 hours, static Place it for 5 hours to ripen, and then stir again before use after ripening;

[0031] Step 3: Prepare high alumina powder slurry: Dilute water glass with a modulus of 2.8-3.0 to a den...

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Abstract

The invention discloses a production method of a high-abrasion-resistance TBM roadheader cutter, and belongs to the technical field of TBM roadheader cutter production. By adoption of the production method, the technical problems of complicated production process, high cost and low precision in the prior art are solved. The production method of the high-abrasion-resistance -TBM roadheader cutter comprises the following steps that a foam model of the cutter is made; quartz powder slurry is prepared; high aluminum powder slurry is prepared; a mould shell is made; and molten steel is poured; the mould shell is shaken out and cleaned after the molten steel is completely solidified, and production of a cutter casting is completed. By using the cutter made by the production method, a tungsten carbide abrasion resistant layer does not need to be welded on the working surface because the hardness and abrasion resistance can meet excavation requirements under different operating conditions, the production process is reduced, and the service life of the cutter is prolonged.

Description

technical field [0001] The invention belongs to the technical field of production of TBM roadheader blades, and in particular relates to a production method of highly wear-resistant TBM roadheader blades. Background technique [0002] At present, the shovel used for TBM roadheader is basically a steel casting made of ZG35CrMnSi, and its chemical composition content is C: 0.30-0.40; Si: 0.50-0.75; Mn: 0.90-1.20; Cr: 0.5-0.8; P, S≤ 0.035, the casting is made of ordinary sand casting, as attached figure 1 As shown, in order to improve the wear resistance, a certain height of tungsten carbide 2 welding surface is welded on the working surface of the blade body 1 . [0003] However, there are the following technical defects: the blade produced by ZG35CrMnSi material has a hardness of 40-43HRC after heat treatment, and it is found that its wear resistance is low during use, which affects the service life. In order to improve the service life of the blade, it is necessary to The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04C22C38/44C22C38/04C22C38/02
CPCB22C9/04C22C38/02C22C38/04C22C38/44
Inventor 张凌黄石起
Owner 凌远科技股份有限公司
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