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Method for preparing titanium salt for cyanideless electro-plating cadmium titan

A technology of titanium salt and hydrochloric acid, which is applied in the field of preparation of titanium salt, the main component of the cyanide-free electroplating cadmium titanium process, can solve the problems of restricting the application and promotion of cyanide-free electroplating cadmium titanium technology, and achieve the effect of easy promotion

Inactive Publication Date: 2008-11-19
HARBIN
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  • Summary
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Problems solved by technology

However, there is no published literature on how to prepare the titanium salt as the main component of the electroplating formula, and there is currently no domestic enterprise producing the above-mentioned titanium salt, and the user can only develop it by himself, which limits the technology of cyanide-free electroplating cadmium titanium app promotion for

Method used

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preparation example Construction

[0021] The preparation method of titanium salt for cyanide-free electroplating of cadmium and titanium according to the present invention is characterized in that the preparation steps are as follows:

[0022] 1. Preparation of medicines;

[0023] Titanium Oxide Sulfate (TiSO 4 ·2H 2 O) Industrial grade;

[0024] Metatitanic acid (H 2 TiO 3 ) Industrial grade;

[0025] Hydrochloric acid (specific gravity 1.19) chemically pure;

[0026] Sulfuric acid (specific gravity 1.84) industrial grade;

[0027] Ammonia (1∶1) chemically pure;

[0028] 2. Preparation of titanium salt;

[0029] 2.1. Prepare an aqueous solution of titanyl sulfate; weigh not less than 500 grams of titanyl sulfate into a container, add 3 to 4 times the weight of deionized water, fully stir and clarify to obtain a colorless and transparent titanyl sulfate aqueous solution, measure after filtration The titanium content of the solution is then stored in a clean, airtight glass bottle for later use;

[0030] 2.2. Prepa...

Embodiment 1

[0035] 2. Preparation of titanium salt;

[0036] 2.1. Prepare an aqueous solution of titanyl sulfate; weigh 812 grams of titanyl sulfate into a container, add 3.5 times the weight of deionized water, stir thoroughly, and let stand for 24 hours. After clarification, a colorless and transparent aqueous solution of titanyl sulfate is obtained, and filtered Then measure the titanium content of the solution and store it in a clean, airtight glass bottle for later use;

[0037] 2.2. Prepare titanium hydroxide; calculate the amount of titanium oxysulfate solution required according to the metal titanium content required by the cyanide-free electroplating cadmium titanium bath formulation, measure the required titanyl sulfate solution, and place it in a container , Add 5 times of deionized water to dilute, and then slowly add 1:1 3000 ml ammonia solution to the titanium oxysulfate aqueous solution, stirring while adding, then white titanium hydroxide precipitates will be produced, the rea...

Embodiment 2

[0042] 2. Preparation of titanium salt;

[0043] 2.1. Prepare an aqueous solution of titanyl sulfate; weigh not less than 500 grams of titanyl sulfate into a container, add 3 times the weight of deionized water, stir well, stand still for 24 hours, and clarify to obtain a colorless and transparent titanyl sulfate aqueous solution , Measure the titanium content of the solution after filtration, and then store it in a clean, airtight glass bottle for later use;

[0044] 2.2. Prepare titanium hydroxide; calculate the amount of titanium oxysulfate solution required according to the metal titanium content required by the cyanide-free electroplating cadmium titanium bath formulation, measure the required titanyl sulfate solution, and place it in a container , Add 3.8 times of deionized water to dilute, and then slowly add the 1:1 1850 ml ammonia solution to the titanium oxysulfate aqueous solution, stirring while adding, at this time, white titanium hydroxide precipitates. The temperatu...

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Abstract

The invention provides a method of preparing titanium salts for cyanideless electroplating cadmium-titanium, relating to a method for preparing titanium salts which are main materials in cyanideless electroplating cadmium-titanium process, belonging to surface treatment technique. The method is characterized in that: the preparation method comprises the steps of preparations of drugs and titanium salts. The method of the invention is capable of preparing the titanium salts with high quality needed in the cyanideless electroplating cadmium-titanium technique, meets requirements of the cyanideless electroplating cadmium-titanium technique, and facilitates the popularization of the cyanideless electroplating cadmium-titanium technique.

Description

Technical field [0001] The invention belongs to surface treatment technology and relates to a preparation method of the main component titanium salt in the cyanide-free cadmium-titanium electroplating process. Background technique [0002] For the surface protection of high-strength steel, cyanide-containing cadmium-titanium electroplating process is mostly used to reduce the harm of hydrogen embrittlement to high-strength steel. For this kind of electroplating technology, its main functional component titanium salt determines the stability and reliability of the process. Cyanide-free cadmium-titanium electroplating process has emerged in China. This process eliminates the highly toxic cyanide, which is beneficial to the protection of the environment and the safety of operators. However, how to prepare the titanium salt as the main component of the electroplating formula, there is no public literature to learn from, and there is no domestic enterprise that produces the above tita...

Claims

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Application Information

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IPC IPC(8): C25D3/54
Inventor 于四龙李连军万杰王朝琳张岩
Owner HARBIN
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