Compression molding method of wc-co pre-burned recycled materials

A technology of recycled materials and pre-burning, applied in the direction of improving process efficiency, can solve problems such as waste of resources, poor formability, and inability to use directly, and achieve the effects of saving production costs, improving forming performance, and reducing waste of resources

A technology of recycled materials and pre-burning, applied in the direction of improving process efficiency, can solve problems such as waste of resources, poor formability, and inability to use directly, and achieve the effects of saving production costs, improving forming performance, and reducing waste of resources

CN110181064BActive Publication Date: 2022-04-01晋城富联鸿刃科技有限公司
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  • Compression molding method of wc-co pre-burned recycled materials
  • Compression molding method of wc-co pre-burned recycled materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Take 5Kg of high-purity paraffin and melt it, put it into a tilting wet mill, then add 230Kg of 10-type tungsten carbide powder, 20Kg of cobalt powder and 60Kg of alcohol, wet mill for 36 hours, and prepare the first mixture by spray drying. Take three samples of 50g each to measure the dry humidity, and take the average value.

[0031] Step 2: Take 5Kg of high-purity paraffin and melt it, put it into a tilting wet mill, then add 250Kg of pre-fired recycled material and 60Kg of alcohol, wet mill for 36 hours, and prepare the second mixture by spray drying. Take three samples of 50g each to measure the dry humidity, and take the average value.

[0032] Step 3: Take 250Kg of pre-fired recycled material, place it in the sintering furnace, gradually raise the temperature to 500°C at a heating rate of 5°C / min, keep it warm for 180min, and then cool down with the furnace. Take 5Kg of high-purity paraffin and melt it, add it to a tilting wet mill, then add 250Kg of pr...

Embodiment 2

[0038] Step 1: Take 5Kg of high-purity paraffin and melt it, put it into a tilting wet mill, then add 230Kg of 10-type WC, 20Kg of cobalt powder and 60Kg of alcohol, wet mill for 36 hours, and prepare the first mixture by spray drying. Take three samples of 50g each to measure the dry humidity, and take the average value.

[0039] Step 2: Take 5Kg of high-purity paraffin and melt it, put it into a tilting wet mill, then add 250Kg of pre-fired recycled material and 60Kg of alcohol, wet mill for 36 hours, and prepare the second mixture by spray drying. Take three samples of 50g each to measure the dry humidity, and take the average value.

[0040] Step 3: Take 250Kg of pre-fired recycled materials, place them in a sintering furnace, raise the temperature at 7°C / min to 600°C and keep it for 150min while cooling in the furnace. Take 5Kg of high-purity paraffin and melt it, add it to a tilting wet mill, then add 250Kg of processed pre-burned recycled material and 60Kg of alcohol, ...

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Abstract

The present invention provides a compression molding method of WC-Co pre-burned recycled material, comprising the following steps: (1) placing the pre-burned recycled material of WC-Co in a sintering furnace for tempering; (2) tempering the tempered Carry out wet grinding and spray drying of pre-fired recycled materials, take at least two samples to measure dry humidity respectively, and calculate the average value of dry humidity; (3) carry out wet grinding and spray drying of the mixture of tungsten carbide powder and cobalt powder, take at least Measure the dry humidity of the two samples respectively, and calculate the average dry humidity; (4) Calculate the difference between the average dry humidity in step (2) and step (3), and calculate the quality of alcohol to be added based on the difference (5) mixing and stirring the pre-fired recycled material after spray drying treatment and corresponding quality alcohol; (6) compacting the stirred mixture by molding. The above method improves the mold yield of pre-fired recycled materials, reduces waste of resources, and saves production costs.

Description

technical field [0001] The invention relates to a compression molding method of WC-Co pre-burned recycled materials. Background technique [0002] Large-sized special-shaped YG alloy has an appearance close to the finished product, and the post-processing process is simple and efficient. The forming compact needs to go through the process of pre-sintering, post-processing, and sintering, and a large amount of waste compacts and recycled waste will be generated during the process, accounting for the total mass of the finished product. About 60% of. [0003] In the process of pre-sintering, cobalt (Co) powder and tungsten carbide (WC) powder are subjected to high temperature and post-processing, and the powder is seriously oxidized. The oxidized powder becomes dry and hard, and has poor formability. Furthermore, part of the internal stress is generated by high temperature, and it is not easy to be pressed during molding, so that the WC-Co waste powder produced after post-proc...

Claims

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Application Information

Patent Timeline
01 Apr 2022
Publication
CN110181064B
IPC
B22F9/04; B22F3/02; C21D1/18; C22F1/00
CPC
B22F9/04; B22F3/02; C21D1/18; C22F1/00; B22F2009/042; Y02P10/20
Inventors
边伟; 袁晓波