Hard metal complex plasticizer and method of manufacturing the same and method of use thereof

Abstract

The invention relates to a forming agent of the manufacture of hard metals and the production method and the use method. The components and the weight per cents are 20 per cent to 27 per cent of paraffin, 34 per cent to 42 per cent of SBS solution and 32 per cent to 44 per cent of No. 120 solvent gasoline. The production method is that the solid paraffin is first dissolved into water and then a screen mesh is adopted to remove the solid impurities; the gained pure liquid paraffin is mixed with the gasoline to stir evenly; then the SBS solution is added to stir fully and mixed evenly to gain the forming agent solution; the temperature of the forming agent solution is kept for use. The use methods of in-situ preparation, thermal insulation and short storage are adopted. The invention adopts the gasoline as solvent, which makes the paraffin and the SBS solution dissolved in the same solution system and makes the two play use of forming together with good forming performance. The carbon content remained is greatly reduced and high-carbon WC powder can be used as raw material to produce hard alloy. Meanwhile, because of low viscidity, the forming agent of the invention can not only suitable for manual adhesive-doped technology but also suitable for the preparation technology of the spray drying mixture.

Description

technical field [0001] The invention relates to a molding agent for powder alloy production and a production method thereof, in particular to a molding agent for hard alloy production and a production method thereof. Background technique [0002] In the production process of cemented carbide, in order to make the powder pressed into products of various shapes, a certain amount of molding agent must be added to it to increase the strength of the product and improve the compression molding performance of the mixture. After the cemented carbide powder is pressed into a product of a certain shape and size, all the forming agent must be removed in the subsequent removal process, and then sintered, so as not to cause holes and dirt to the product, and there is less residual carbon. Since the theoretical carbon content (that is, saturated carbon content) of tungsten carbide used in cemented carbide is 6.13%, if the forming agent remains in the alloy due to cracking during the remov...

AI Technical Summary

Problems solved by technology

The above molding agents have their own characteristics. The advantages of rubber molding agents are that they have good molding performance and can produce products with complex shapes. The disadvantages are that they have high residual carbon, are difficult to control, are easy to age, have high ash content, and are easy to dirty products. High viscosity, difficult to disperse, not suitable for spray drying; the advantage of paraffin wax is that there are few residues, suitable for spray drying, but the disadvantage is that the forming performance is not ideal, and products with complex shapes cannot be produced, and the green compact has low strength and is prone to edge drop Corners, delamination, cracks and other waste products; the advantage of PEG is that it has less residual carbon and is suitable for spray drying, but the disadvantage is that the molding performance is not ideal, moisture absorption, and is greatly affected by the environment

[0003] In summary, the prior art has not yet provided a molding agent with good molding performance and less residual carbon.

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