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Automobile parts stamping

What Are The Creative Stamping Technology Of Automotive Industry?

What Are The Creative Stamping Technology Of Automotive Industry? Stamping modern production technologyFirst of all,Light weight body technologyData show that every 1% reduction in vehicle quality, fuel consumption declines0.6%~1.0%; steel plate accounts for about 75% of car materials, and the body quality is about25% to 30% of the car's quality, as the price of oil rises, the body weight will becomeFor the goal pursued by many manufacturers, the technology that promotes lightweight body will beTo the rapid development of the rapid development.1. Application of laser tailor welded blank technologyLaser tailor welded blanks are steel pieces of different materials, different thicknesses and different coatings.Welded into a single piece to meet the different requirements of the material properties of the parts.The advantages of this process are:                    (1) Reduce the quality of structural parts to achieve lightweight body;                    (2) reduce the number of structural parts;       In addition, the first domestic production of laser panels, ThyssenKrupp in WuhanLi, FAW Baoyou Company is currently the largest laser tailored blank processing enterprise in China. Technical advantages of laser tailor welded blanksReduce the number of workpieces, thereby reducing processing and reducing production costsReduce the weight of the workpiece, thus reducing the weight of the vehicleImprove workpiece quality (reduce cumulative tolerances)Improve body crash safety2. Application of high strength steel plateAs oil prices rise and people's demand for safety increases, thinning increasesIt is the development trend of steel sheets for automobiles. Therefore, high-strength steel sheets will get morePlus universal application. The data show that in the early 1980s, the United States, Japan and other countries began toHigh-strength steel plates are used for the production of bodywork;High-strength steel plate can reduce the quality of parts and improve the collision of the whole vehicleFullness, improve the appearance quality and anti-concavity of the parts.Forming characteristics of high-strength steel sheets: High tensile strength, forming force increases with increasing tensile strength;The increase in carbon content and alloying elements reduces the forming properties of the material;High tensile strength and corresponding rebound increase;When deep drawing, high forming force and deformation will increase the possibility of wrinkling;High material shear strength and increased shear force.3. Hot stamping forming technologySheet thermoforming is to heat the billet to a temperature above the recrystallization temperature.Temperature, when the sheet is formed in the austenite state, reducing the sheet forming timeThe flow stress increases the formability of the sheet.      The advantages of this process are: optimizing part integration and reducing the number of partsThe amount has a very significant weight loss effect.Secondly, New technology for stamping equipmentThe modern automobile industry has a large-scale production, small batch size, and variety changes.Quick and multi-model collinear production; at the same time, the body cover is largeThe characteristics of integration and integration, thus requiring the punching equipment to be flexible and automatedAnd the direction of high efficiency.Third, mold surface strengthening technology - TD surface coating treatment technology1. Overview of TD surface coating treatment technologyTD surface coating treatment technology is short for Thermal Diffusion Coating Process.      Developed in 1972 by the Toyota Central Research Institute of Japan.      In 1973, Japan's TOYOTA and other American auto companies began to apply this technology to automotive molds.      TD surface coating treatment technology is a general term for surface hardening treatment by molten salt immersion plating, electrolysis and powder method (someone in China: molten metal plating). The principle is: The workpiece is placed in a mixture of borax (or other) molten salt, and a layer of metal carbide coating of several micrometers to several tens of micrometers is formed on the surface of the workpiece by high temperature thermal diffusion. At present, the most widely used at home and abroad is vanadium carbide (VC) coating. Due to the high hardness (HV=2800~3200) and tighter structure of these carbides, the performance of TD-treated automotive molds has been greatly improved. Extremely high wear resistance, seizure resistance (strain), corrosion resistance; according to statistics: More than 85% of the molds produced in large quantities in Japan are processed by TD.2. Process flow of TD surface coating treatment technologyAppearance and size inspection (with or without defects in appearance, measuring the size of the insert for easy lifting) → Grinding, polishing (polishing defects, polishing when special) → Degreasing and loading (removing the surface grease of the workpiece, loading the workpiece onto the workpiece holder) →Part preheating (changing the matrix structure and reducing the deformation of the workpiece)→TD coating treatment (treatment temperature 850 °C - 1100 °C, using borax salt bath) → quenching (improving the mechanical properties of the matrix, obtaining the necessary hardness) → back Fire (eliminate the stress of the workpiece) → clean (wash) (remove the borax salt on the surface of the workpiece) → polish (removal of oxides and adherends on the surface of the workpiece) → inspection.3, the advantages of TD processing technology(1) The surface of the automobile mold after TD treatment has high hardness and low friction coefficient;(2) The coating treated by TD is metallurgical bonding and has excellent anti-seizure and anti-strain properties;(3) The life of automobile molds after TD treatment is increased several times, even dozens of times;(4) The corrosion resistance and oxidation resistance of automobile molds after TD treatment are also greatly improved;

What Are Basic Process And Arrangement Of Stamping Process For Automotive Cover Parts?

What Are Basic Process And Arrangement Of Stamping Process For Automotive Cover Parts? Basic process and arrangement of stamping process for cover parts     The basic processes of the stamping process of the cover are: blanking, drawing, shaping, trimming, flanging and punching.     In actual production, some processes can be combined: blanking, trimming, trimming, trimming, and punching.     The shape of the cover is mostly formed mainly in the drawing process.The blanking process is mainly to obtain the shape and size of the blank required for the drawing process.     The main content of the shaping process is the shape of the cover that has not been formed in the drawing process.     The main content of the trimming process is to cut off the process replenishment on the deep drawing. These process supplements are only required for the drawing process and are cut off after the drawing is completed.     The flanging process is located after the trimming process, and the main task is to form the edge of the cover.     The punching process is used to machine various holes in the cover. It is usually carried out after the drawing or flanging process.

What are characteristics of automobile body panel stamping forming?

What are characteristics of automobile body panel stamping forming? Body panel stamping forming characteristics1. One-time deep drawing    The current theoretical analysis and technical level are not as analytical and computational as the cylindrical axisymmetric parts. Therefore, the design of the cover product is required to be combined with the stamping process to ensure a one-time deep drawing on the basis of small deformation and shallow drawing.    Therefore, it is required to realize stamping of the cover with a minimum depth of drawing, a minimum of stamping steps, and a mold structure as simple as possible.2. Incremental composite molding    The shape of the cover is complicated, and the deformation of the blank is generally not a simple deep drawing deformation, but a composite molding in which both drawing and bulging are present.3. Partial molding    When a part having a partial shape (protrusion or recessed) inside the contour is press-formed, the partial forming starts to be formed when the punch is lowered to a certain depth due to the function of the blanking force, and is completely pasted at the end of the molding.4. Deformation path change5. Deformation trend control    The main measures to control the deformation tendency of the stamping forming of the cover are to determine the reasonable punching direction, determine the pressing surface, and rationally design and set the drawing rib.    The drawing direction, the process replenishment and the shape of the pressing surface are prerequisites for determining whether or not to deepen the covering member, and the rational laying of the drawing ribs for controlling the entire drawing blank is a necessary condition for ensuring the drawing of the qualified covering member.