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Acid degreasing agent for steel surface and preparation method thereof

A degreaser and acid technology, which is applied in the field of acid degreaser and its preparation, can solve the problems that oil and rust removal cannot be achieved in one step, and the effect cannot be achieved.

Inactive Publication Date: 2012-07-04
HUBEI DE MEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the degreasing treatment adopts alkaline chemical degreasing and electrochemical degreasing, and degreasing and rust removal cannot be done in one step.
However, for the oily oxides formed by high-carbon steel and stainless steel after high-temperature tempering, degreasing or derusting alone cannot achieve the desired effect

Method used

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  • Acid degreasing agent for steel surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Example 1: Use a container to add 300ml of water, 100ml of phosphoric acid, 200ml of nitric acid, heat at 60-80°C, start the mixer under normal pressure, rotate at 30r / min, add 80g of polyoxyethylene octylphenol ether, and add coconut oil Add 100g of alkanolamide, add 15ml of Pingpingjia, add 100g of polyoxyethylene fatty alcohol ether sodium sulfide, add 40g of amine fluoride, and 2g of hexamethyltetramine. Add water until 1L is fully dissolved and uniform to obtain an acidic liquid product.

[0015] The components and stirring speeds of Examples 2 to 5 are as follows, and the operation is the same as that of Example 1 (prepared in 1L):

[0016]

[0017] Features and conditions of use of the acidic degreasing agent of the present invention:

[0018] Appearance: light yellow liquid; processing temperature: normal temperature or use at 30-45°C; bath concentration: 30-50ml / L; processing time: more than 2 minutes; cleaning methods: soaking, spraying, scrubbing, ultraso...

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Abstract

The invention discloses an acid degreasing agent for a steel surface and a preparation method thereof. Each liter of the acid degreasing agent comprises the following components: 50 to 100 grams of polyoxyethylene octyl phenol ether, 80 to 120 grams of coconut oil alkylolamide, 15 to 25ml of peregal, 50 to 100 grams of polyoxyethylene aliphatic alcohol ether sodium sulfide, 80 to 120ml of phosphoric acid, 150 to 200ml of nitric acid, 30 to 50 grams of ammonium fluoride and 1 to 3 grams of hexamethylenetetramine. When matched with hydrochloric acid, the acid degreasing agent can complete degreasing and acid cleaning in one step at normal temperature. When matched with sulphuric acid and the hydrochloric acid, the acid degreasing agent can remove thick oxide which is formed due to temperingof stainless steel and high-carbon steel. By using the acid degreasing agent, the steel surface is smooth and is uncorroded.

Description

technical field [0001] The invention relates to an acidic degreasing agent for steel surface treatment, in particular to an acidic degreasing agent which can achieve degreasing and derusting in one step by coordinating with an acid and a preparation method thereof. technical field [0002] Type the technical field description paragraph here. Background technique [0003] Steel parts need to be degreased before electroplating, painting, phosphating, and blackening, and then pickled to remove rust. At present, most of the degreasing treatment adopts alkaline chemical degreasing and electrochemical degreasing, and degreasing and rust removal cannot be done in one step. For the oily oxides formed by high-carbon steel and stainless steel tempering at high temperature, degreasing or derusting alone cannot achieve the desired effect. Background technique [0004] Type the technical field description paragraph here. Contents of the invention [0005] The technical problem t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06C23G1/08
Inventor 瞿德勤
Owner HUBEI DE MEI TECH