High-density super-hard material manufacturing method

A technology of superhard materials and production methods, which is applied in transportation and packaging, metal processing equipment, etc., can solve the problems of unstable product quality, low density, uneven product density, etc., and achieve good density and sintering shrinkage The effect of small size and high product dimensional accuracy

Inactive Publication Date: 2017-03-15
眉山市奔朗新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The above-mentioned production method has the following disadvantages: the product density is not uniform and the density is not high, resulting in unstable product quality

Method used

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  • High-density super-hard material manufacturing method
  • High-density super-hard material manufacturing method
  • High-density super-hard material manufacturing method

Examples

Experimental program
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Effect test

no. 1 example

[0058] see Figure 1-Figure 4 , Figure 9 , Figure 10 with Figure 13 (Arrow in the figure is the stressed direction of superhard material product), the manufacture method of this high-density superhard material product, comprises the following steps:

[0059] ①. Prepare the formula raw materials required for the corresponding superhard material products in proportion, then select and process them into the required particle size range, and mix them evenly in the three-dimensional mixer for use;

[0060] 2. Put the uniformly mixed formula raw material 1 into the mold 2, prefabricate the cuboid product body 3A and the cylindrical product body 3B by a hydraulic forming machine, and dry it for use;

[0061] ③. Put the prefabricated product body into a flexible film bag, and then vacuumize the air in the flexible film bag containing the product body and seal it;

[0062]④. Carry out isostatic pressing and secondary pressure setting on the product green body sealed with flexibl...

no. 2 example

[0074] see Figure 5-Figure 8 , Figure 11 , Figure 12 with Figure 13 (Arrows in the figure are the direction of force of the superhard material product), the manufacturing method of this high-density superhard material product is different from the first embodiment in that: the superhard material product is in the shape of a torus, a tube, etc. Shape with lumen structure. In the production process, it is prefabricated into a circular product body 3C and a tubular product body 3D by a hydraulic forming machine. In the isostatic pressing secondary pressure setting treatment, the pressurized medium 4 is a liquid, and the liquid can carry out this process. The inner cavity of the product green body 3 is subjected to isostatic pressure for secondary pressure setting at the same time, so that the density is uniform and the size is accurate.

[0075] Other parts not described are the same as those of the first embodiment, and will not be analyzed and described here.

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Abstract

A high-density super-hard material manufacturing method includes the steps: weighing formula raw materials; uniformly stirring the formula raw materials in a mixer; pre-forming the formula raw materials by a hydraulic former; performing vacuum pumping seal in a flexible film bag; performing isostatic pressing secondary pressure shaping in a high-pressure container; demolding; performing normal pressure sintering in an electric furnace; forming products. The manufacturing method has the advantages that product blanks are more compact and higher in strength and damage to semi-finished products is low in the production process as the product blanks in the high-pressure container are secondarily pressurized and shaped in different directions by the aid of pressurizing media, the product blanks are uniform in density, low in sintering shrinkage and high in dimensional precision, so that high compactness and high strength of the products are ensured, the yield of the products is improved, hot pressed sintering of the product blanks in the intermittent electric furnace is omitted, so that the product blanks can be sintered in a continuous electric kiln, the labor intensity of workers is greatly relieved, production efficiency is improved, and production cost is reduced.

Description

technical field [0001] The invention relates to the field of superhard material products, in particular to a method for manufacturing high-density superhard material products, wherein the superhard material products at least include grinding heads, grinding tools, knives and the like. Background technique [0002] The manufacturing method of existing superhard material product has following several kinds: [0003] (1) Gel injection molding, the process flow is: [0004] a. Various formula raw materials that meet the particle size and purity requirements are weighed in proportion and stirred together in the mixer; [0005] b. Add the non-toxic gel premix in proportion, and then stir evenly to form a slurry; [0006] c. Inject the slurry into the plastic mold of the product with a pressure injection machine; [0007] d. Keep warm for 20 minutes in a temperature room of 80-90°; [0008] e. Dry at room temperature for 24 to 48 hours; [0009] f. Remove the mold and place it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/52C04B35/63C04B35/636B22F1/00B22F3/04C22C26/00
CPCC22C26/00C04B35/52C04B35/565C04B35/63C04B35/636B22F3/04B22F2998/10C04B2235/77C04B2235/96B22F1/10B22F3/02
Inventor 尹育航陶洪亮何锡伶向刚强陶维亮
Owner 眉山市奔朗新材料科技有限公司
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