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Special anti-oxidation lubricating coating for hot stamping, and preparation method and application thereof

A hot stamping and anti-oxidation technology, used in fire-resistant coatings, coatings, etc., can solve the problems of wear and tear, product oxidation, etc., to reduce wear and tear, reduce damage, and enhance formability.

Inactive Publication Date: 2018-12-18
SUZHOU PRESSLER ADVANCED FORMING TECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a special anti-oxidation lubricating coating for hot stamping and its preparation method and application, which are used to solve the problems of oxidation and wear and tear of products in the current thermoforming process

Method used

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  • Special anti-oxidation lubricating coating for hot stamping, and preparation method and application thereof
  • Special anti-oxidation lubricating coating for hot stamping, and preparation method and application thereof
  • Special anti-oxidation lubricating coating for hot stamping, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to hexagonal boron nitride powder 30%, sodium boron bentonite (thickener) 5%, polyvinyl alcohol (dispersant) 2%, DF-8025 defoamer 0.5%, LF-1207 alcohol amine rust inhibitor 1.2 %, the balance is water, and the components are proportioned and weighed. First, add the dispersant, thickener, antirust agent, and defoamer to the solvent, and use ultrasonic waves to make them fully mixed and dissolved, and then hexagonal boron nitride Add it, and use ultrasonic waves to mix and dissolve evenly to obtain the special anti-oxidation lubricating coating for hot stamping. The particle size distribution of the hexagonal boron nitride powder is 1-3 μm, and the purity is 99.6%.

[0033] Spray the above-mentioned anti-oxidation lubricating coating specially for hot stamping on the sheet evenly with spraying equipment, the spray thickness is 20 μm, dry it in a furnace at 300°C and keep it warm for 30s-50s, take out the sheet and heat it on the thermoforming equipment For form...

Embodiment 2

[0035] 40% hexagonal boron nitride powder, 15% organic boron bentonite (thickener), 15% polyethylene glycol (dispersant), 1.0% DT-135 industrial defoamer, 2% acetylene glycol rust inhibitor , and the balance is ethanol, and the proportion of each component is weighed. First, add the dispersant, thickener, antirust agent, and defoamer to the solvent, and use ultrasonic waves to fully mix and dissolve them evenly, and then add hexagonal boron nitride. Wherein, ultrasonic waves are used to fully mix and dissolve evenly to obtain the special anti-oxidation lubricating coating for hot stamping. The particle size distribution of the hexagonal boron nitride powder is 3-10 μm, and the purity is 99.6%.

[0036] Spray the above-mentioned special anti-oxidation lubricating coating for hot stamping evenly on the sheet with a spraying equipment, the spraying thickness is 30 μm, dry it in a furnace at 200°C and keep it warm for 30s-50s, take out the sheet and heat it on the thermoforming eq...

Embodiment 3

[0037] Embodiment 3 comparative experiment

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Abstract

The invention concretely relates to a special anti-oxidation lubricating coating for hot stamping, and a preparation method and an application thereof. The coating comprises hexagonal boron nitride, athickener, a dispersant, an antifoaming agent, a rust inhibitor and a solvent. The preparation method is characterized in that all above components are thoroughly uniformly mixed to prepare the coating. The application comprises the following steps: spraying the coating on a plate, carrying out drying and heat insulation on the sprayed plate, carrying out hot stamping molding, and removing the special anti-oxidation lubricating coating for hot stamping. Compared with coatings in the prior art, the coating has the advantages of realization of oxidation prevention by isolating oxygen, maintaining of a good lubricity and a good thermal conductivity at a high temperature, improvement of the surface quality of parts, and easiness in later removal.

Description

technical field [0001] The invention belongs to the technical field of metal thermal processing, and in particular relates to a special anti-oxidation lubricating coating for hot stamping, a preparation method and application thereof. Background technique [0002] In the hot stamping process, especially in the hot forming process of high-strength steel, the plate used is an uncoated bare plate. When the bare plate is heated and taken out in a nitrogen atmosphere protection furnace, there is oxidation of the steel plate. The generation of skin will increase the friction between the steel plate and the mold, increase the die loss of the mold, and reduce the service life of the mold. At the same time, the generation of oxide skin will reduce the formability of the steel plate and cause strain. Moreover, the thermal conductivity of the scale is very low, which seriously affects the heat transfer between the steel plate and the mold. [0003] Currently commonly used high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/43C09D7/65C09D7/63
CPCC09D1/00C09D5/18C09D7/43C09D7/63C09D7/65
Inventor 安健陈汉杰王波李浩
Owner SUZHOU PRESSLER ADVANCED FORMING TECHNOLOGIES CO LTD
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