In the “Second Ventureâ€, China Heavy Duty Truck Driveshaft Processing Department adheres to the road of technological innovation and solves practical problems on the production line.
The on-site operation observation of the processing department of China Heavy Duty Truck Driveshaft found that the spline part of some intermediate spline joint products in the heat treatment workshop had rust. Spline joints after heat treatment, some transferred to storage, and some need to be transferred to the machining shop for further machining, whether it is inventory or transit process, short for three or five days, long for more than a month, if the heat treatment shop processing If the finished product does not undergo anti-corrosion treatment, the workpiece surface will rust in a very short time, which will seriously affect the product quality. Therefore, the technical room coating technician actively proposed to develop the intermediate spline joint water-based antirust liquid after intermediate frequency.
China Heavy-Duty Truck Driveshaft Technical Office analyzes the existing problems: The commonly used rust-prevention program is to use rust-proof oil film to prevent rust and the surface, but the price of anti-rust oil is relatively expensive, and the use of anti-rust oil processing machine The water-based cutting fluid will contaminate the cutting fluid. The anti-corrosion treatment of the products processed in the heat treatment workshop must be combined with the problems of simple operation and production costs. Therefore, it is best to use a water-based anti-rust solution.
The coating technologist decided to use: Intermediate chemicals to make the selected oily corrosion inhibitor well mixed with water to form an emulsion, and the addition of micro-additives greatly improved water quality, compounded with oil-based corrosion inhibitors, and enhanced corrosion inhibition effect. This spontaneous development of water-based anti-rust liquid can make the final anti-corrosion time of about 2 months, much higher than that of similar products on the market for a month or so of anti-rust period. Whether it is in performance or cost have advantages.
To cope with the implementation of this plan, the heat treatment plant has arranged a 4m3 tank, and the purchased raw materials are added to the container according to a certain ratio, and the mixture is fully stirred and ready. The tempered parts are placed in a funnel-shaped cylindrical container, suspended in a train and immersed in a container containing anti-rust liquid for about 10 seconds. The drain can be taken out, dried naturally, and then transferred to the warehouse. Or the next procedure.
The entire operation process is simple and it can process 1000-2000 workpieces per hour. The cost of working hours is almost negligible. The cost of a single product only needs a few cents to ensure that the rainy season is not modified for 1-2 months.
The technical office will configure the anti-rust liquid, issue relevant technical documents and train the heat treatment workshop operator to formally test the operation, and initially verify the anti-rust effect: the use of water-based anti-rust liquid formula is advanced, low cost, superior performance, significant effect, anti- The rust period lasts up to 2 months.
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