Nano bentonite improved pasty demolding agent for valve casting

A technology of nano-bentonite and mold release agent, which is applied in the direction of casting molding equipment, molds, mold components, etc., can solve the problems of affecting the quality of valve body blanks, increasing production input costs, poor mold release effects, etc., and achieve mold release effects Good, long service life, easy to pack and transport

Inactive Publication Date: 2015-10-07
HEXIAN KEJIA VALVE CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve body release agent currently used has the characteristics of poor release effect and short service life, which will not only affect the quality of the valve body blank, but also increase the production input cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A nano-bentonite modified paste mold release agent for valve body casting is prepared from the following raw materials in parts by mass:

[0022] Methyl silicone oil 7kg, nano bentonite 1.2kg, zeolite powder 1.5kg, calcium carbonate 1.2kg, lard 1kg, mica powder 0.6kg, rosin acid 0.3kg, laurel wax 0.2kg, alkylnaphthalene sulfonate 0.1kg, concentrated nitric acid 0.3kg, methyl ethyl ketone 1kg, ethanol 2kg, water 5kg;

[0023] Its preparation method is as follows:

[0024] (1) First disperse the nano-bentonite in ethanol, soak for 1 hour, then add methyl silicone oil dissolved in methyl ethyl ketone, mix evenly, then add concentrated nitric acid, heat up to 50-60 ° C for 30 minutes, and then add the ultrasonic frequency Ultrasonic for 20min at 22kHz and power 50W to obtain modified methyl silicone oil;

[0025] (2) Dry the zeolite powder at 70-80°C for 5h, then calcine it at 350-400°C for 3h, then add it to a ball mill, add calcium carbonate, mica powder, laurel wax and...

Embodiment 2

[0030] A nano-bentonite modified paste mold release agent for valve body casting is prepared from the following raw materials in parts by mass:

[0031] Methyl silicone oil 8kg, nano-bentonite 1.5kg, zeolite powder 1.5kg, calcium carbonate 1.2kg, lard 0.8kg, mica powder 0.6kg, rosin acid 0.4kg, laurel wax 0.3kg, alkylnaphthalene sulfonate 0.1kg, concentrated Nitric acid 0.3kg, methyl ethyl ketone 1kg, ethanol 2kg, water 6kg.

[0032] The preparation method of the release agent in this example is the same as that in Example 1.

Embodiment 3

[0034] A nano-bentonite modified paste mold release agent for valve body casting is prepared from the following raw materials in parts by mass:

[0035] Methyl silicone oil 8kg, nano-bentonite 1.5kg, zeolite powder 1.6kg, calcium carbonate 1.2kg, lard 1kg, mica powder 0.8kg, rosin acid 0.5kg, laurel wax 0.4kg, alkylnaphthalene sulfonate 0.2kg, concentrated nitric acid 0.3kg, methyl ethyl ketone 1.2kg, ethanol 3kg, water 5kg.

[0036] The preparation method of the release agent in this example is the same as that in Example 1.

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Abstract

The invention discloses a nano bentonite improved pasty demolding agent for valve casting and relates to the technical field of demolding agent production. The nano bentonite improved pasty demolding agent is prepared by the following raw materials in part by mass: 70-80 parts of methyl silicone oil, 12-15 parts of nano bentonite, 15-18 parts of zeolite powder, 10-14 parts of calcium carboante, 8-11 parts of lard, 6-9 parts of mica powder, 3-5 parts of abietic acid, 2-4 parts of laurel wax, 1-2 parts of alkyl naphthalene sulfonate, 2-4 parts of concentrated nitric acid, 10-12 parts of methyl ethyl ketone, 20-30 parts of alcohol and 50-60 parts of water. The nano bentonite improved pasty demolding agent is good in demolding effect, demolding can be implemented after a valve is fully cooled and shaped, size accuracy and surface quality of the valve are not affected, and the nano bentonite improved pasty demolding agent is long in service life.

Description

Technical field: [0001] The invention relates to the technical field of mold release agent production, in particular to a nano-bentonite modified paste mold release agent for valve body casting. Background technique: [0002] The valve body is a main component in the valve. There are different mechanical manufacturing methods according to the pressure level, such as casting and forging. Generally, the valve body of medium and low pressure specifications is usually produced by casting process. Casting is one of the basic processes of the modern device manufacturing industry. It is a process in which metal is melted into a liquid that meets certain requirements and poured into a mold. After cooling, solidification, and cleaning, a casting with a predetermined shape, size and performance is obtained. The casting blank is almost formed, and achieves the purpose of free machining or a small amount of machining, which reduces the cost and reduces the production time to a certain e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 黎宏
Owner HEXIAN KEJIA VALVE CASTING
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