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        Pinghu qing fu auto parts co., LTD

        Contact:Mr.Peng

        Mobile:13818307298

        Postcode:314200

        Telephone: 0573-85599268

        Email:2631134232@qq.com

        Address:No. 1555, Xingping 4th Road, Economic Development Zone, Pinghu City, Zhejiang Province



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        Surface treatment process for key parts of automobile clutch driven disc assembly

        2019-07-10 09:15:05 点击数780
        At present, the surface of key metal parts such as driven discs, vibration damping discs, hubs, compression plates and gaskets in automobile clutch driven disc assembly products are mostly made of phosphating production process, the process technology is backward, and the appearance of the products is not Good-looking, the surface color difference of different batch parts is large, the workpiece size is affected by the phosphating time, the precision is difficult to control, the quality is unstable, and the sulfuric acid used in the phosphating process is highly polluted; some parts are plated with galvanizing, chrome plating, nickel plating, etc. The process, which is expensive, has a large pollution to the environment, and is no longer suitable for the needs of enterprise development.
         
        In order to improve the appearance quality of the product and the surface anti-rust effect, reduce the cost, it is especially important to provide an environmentally-friendly and stable quality surface treatment process for the key parts of the driven disc assembly.
         
        Process method
         
        The surface treatment process of the key parts of the clutch disc assembly is carried out by carbonitriding, then ultrasonic cleaning and shot blasting, then tempering and baking, and finally immersed in quick-drying anti-rust oil. , a surface treatment process for rapid drying.
        The method is as follows: the parts are subjected to carbonitriding treatment to obtain the hardness requirements and subsequent processing conditions required for the usability of the parts. The parts subjected to carbonitriding treatment are processed by ultrasonic cleaning and shot blasting, to remove surface oxide scale, remove dirt and oil on the surface of the parts, and strengthen the surface structure. In order to obtain a pure, clean and beautiful surface color of the workpiece in subsequent processing.
         
        The shot blasting parts are controlled by the precise setting of the process parameters (achieved by the mesh setting furnace's own numerical control setting and monitoring settings). By controlling the tempering temperature and tempering time, yellow, red and blue can be obtained. The surface of the parts of different colors such as color.
         
        The tempering temperature is 200 ° C, and the surface is light yellow when the time is 60 minutes;
         
        The tempering temperature is 220 ° C, and the surface is light yellowish white under the condition of 60 minutes;
         
        The tempering temperature is 230 ° C, and the surface is yellow when the time is 60 minutes;
         
        The tempering temperature is 240 ° C, and the surface is golden yellow when the time is 60 minutes;
         
        The tempering temperature is 260 ° C, and the surface is red when the time is 60 minutes;
         
        The tempering temperature is 280 ° C, and the surface is purple-red under the condition of 60 minutes;
         
        The tempering temperature is 300 ° C, and the surface is blue for 60 minutes;
         
        The tempering temperature is 320 ° C, and the surface is dark blue under the condition of 60 minutes;
         
        The tempering temperature is 340 ° C, and the surface is blue-gray under the condition of 60 minutes;
         
        The tempering temperature is 370 ° C, and the surface is light white blue gray under the condition of 60 minutes;
         
        The tempering temperature is 400 ° C, and the surface is red and black under the condition of 60 minutes;
         
        The tempering temperature is 460 ° C, and the surface is black under the condition of 60 minutes;
         
        Metal parts are heated in exposed oxidizing air (unprotected atmosphere) for a short period of time, due to the formation of a thin and tight adhesion oxide, the surface color of the part changes. During the tempering process, the quenching structure is accelerated at the same time, the internal stress is eliminated, and a relatively stable structure is obtained.
         
        After tempering and natural cooling, the immersion oil is immersed or soaked in a day period, so that the surface of the parts is covered with anti-rust oil and placed in the drying area. Dry naturally after 1 day, and pass the high-efficiency and high-quality anti-rust treatment.
         
        The surface treatment process is suitable for the metal surface treatment of key components such as the driven disk assembly and the cover assembly, such as the driven plate, the damping plate, the hub, the pressing piece, the gasket, the diaphragm spring and the like. Surface processing. The application of the utility model will effectively reduce the difficulty and cost of surface treatment of key metal parts of the automobile clutch driven disc assembly, reduce waste, optimize the working environment, improve labor intensity, and simplify the production process.
         
        Process characteristics and technical advantages
         
        After the carbonitriding of the parts, the tempering coloring technology has no side effects. Compared with the phosphating process, it is not necessary to prepare a chemical solution such as a phosphating solution or a hydrochloric acid solution (or a sulfuric acid solution), which greatly reduces environmental pollution. Compared with the electroplating process, the electroplating cost is high, and the side effects are large, and the pollution of the waste water and the like is large, and the production cost of the bake color treatment process is reduced by about 50%, and no waste water and the like are generated, and Low production cost and low environmental pollution. In addition, the labor intensity and working environment of workers have also been significantly improved.
         
        The ultrasonic cleaning and shot blasting technology before tempering can effectively remove the surface oxide scale, remove the dirt and oil on the surface of the parts, and strengthen the surface structure. Compared with the phosphating process, the surface of the machined parts is cleaner, and the surface strength of the workpiece is better, and the toughness and wear resistance are superior.
         
        Using the precise setting and control technology of the process parameters, the surface of the workpiece with different colors such as yellow, red and blue can be obtained by different control of the tempering temperature and the tempering time. Compared with the single workpiece gray of the phosphating process, not only the appearance of the workpiece is bright, the color is novel, the product grade is obviously improved, and the product has a variety of colors.
         
        The heat treatment coloring technique using metal surface oxidation makes the product quality and workpiece size more stable. Compared with the phosphating process, the workpiece size does not become smaller and thinner because there is no immersion corrosion of the phosphating solution. Also, compared to the electroplating process, the workpiece size does not become large and thick because there is no influence of the plating layer. Overcoming the traditional phosphating process and electroplating process, the quality of the key dimensions of the parts is unstable, and the accuracy is not up to standard.
         
        Due to the quick-drying anti-rust oil immersion and quick drying technology, the surface of the tempered and baked parts is covered with water, and after one day, the surface of the workpiece is naturally dried. It has changed the low-efficiency and high-strength operation mode of manual wiping off rust preventive oil on the surface of the workpiece in the traditional process. After the parts are oiled by the baking process, they are stored under normal storage conditions for 10 months without rust. Its anti-rust performance is significantly better than the traditional surface treatment process.
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        Address:No. 1555, Xingping 4th Road, Economic Development Zone, Pinghu City, Zhejiang Province
        Fax: 0573-85599268
        Postcode:314200
        Contact:Mr.Peng
        Mobile:13818307298
        Telephone: 0573-85599268
        Email:2631134232@qq.com
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