Category: Manufacturing Technology knowledge

During injection molding, the mold temperature is easy to affect the molding cycle and molding quality. In actual operation, it is set from the lowest appropriate mold temperature of the material used, and then adjusted appropriately according to the quality status. Die temperature refers to the temperature on the surface of the die cavity when forming is being carried out. In terms of die design and the setting of forming engineering conditions, it is important not only to maintain an appropriate temperature, but also to make it evenly distributed. Uneven mold temperature distribution will lead to uneven shrinkage and internal…

Injection molding is an engineering technology, which involves transforming plastics into useful products that can maintain their original properties. The important process conditions of injection molding are the temperature, pressure and corresponding action time that affect the plasticizing flow and cooling. 1、 Temperature control 1. Barrel temperature: the temperature to be controlled during the injection molding process includes the barrel temperature, nozzle temperature and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, while the second temperature mainly affects the flow and cooling of plastics. Each kind of plastic has different flow temperature. The flow…

In the development process of high-speed cutting technology, high-speed cutting machine tools, high-speed tool systems and high-speed cutting technology are the three main technologies, and tool technology plays a very important role. With the increase of cutting speed, higher requirements are put forward for cutting tool materials, tool geometric parameters, tool body structure and cutting process parameters, which are different from those under the traditional cutting speed. Because the cutting heat and tool wear produced in high-speed cutting are much higher than those at ordinary speeds, the high temperature resistance and wear resistance of tool materials are an important obstacle…

The parts and components of mechanical equipment are closely related to the work and use. Therefore, when using mechanical equipment, we need to maintain not only the equipment, but also the parts and components. Otherwise, it will affect the normal work of mechanical equipment and reduce its use performance. Based on our understanding, China Standard Parts Network told you about the disassembly of mechanical equipment parts and components, hoping to help you use them. 1. The disassembly shall be carried out in order, and the general principle is the reverse order of assembly. Generally, they are removed from the outside…

Research and development of new die steel materials Mr. Ukamura: DRM was developed by Japan's Datong special steel in recent years. In order to achieve a high hardness and high toughness base high-speed steel, it can reduce the coarse carbides to the limit, increase the service life and reduce the mold cost. The reason why it is called base high-speed steel is that it is different from ordinary high-speed steel in that after heat treatment, crystalline carbide (primary carbide) and precipitated carbide (secondary carbide) still exist and cannot be dissolved into the matrix, while DRM base high-speed steel can be…

As China's economy continues to grow at a high speed, the domestic mold manufacturing industry is growing faster than GDP. This has also provided a huge market for the development of domestic die steel, driving the rapid improvement of the domestic die steel production, variety, specification and quality level. As the matrix of die manufacturing, the performance of die steel has a direct impact on a series of factors such as the service life and production cost of the die, and has been paid more and more attention by die manufacturers. Research and Development of New Cold Working Die Steel…

FAQ of sheet metal bending machine and bending die Those who are familiar with sheet metal processing engineering know that bending is the most difficult and technical project in sheet metal processing engineering. (1) What is a sheet metal bend? Sheet metal bending is the process of turning a flat sheet metal into a solid through a pressure device and a special mold. Due to different materials, thicknesses, lengths and widths of plates and different shapes and angles to be formed, there are bending machines with different tonnage and size of pressure equipment, which are equipped with upper and lower…

Common cutting processes include water cutting, EDM, gas fuel cutting, plasma cutting, die cutting, sawing, wire cutting, laser cutting, etc. Comparison of common cutting processes: Cutting process | Slot deformation precision Graph change speed usage Laser cutting | Very small, very high, very easy, high, low Gas fuel cutting | very serious low easy low Plasma cutting | larger, larger, lower, easier, higher, lower Die stamping | small, large, low and difficult (large quantity) Sawing | Large, small, low, difficult, slow, low Wire cutting | small, small, high, easy, slow, high Water cutting | Large high easy high high EDM…

When we use carbon steel stamping elbow, we should pay attention to the connection of some production steps. 1. Chrome stainless steel stamping elbow has certain corrosion resistance (oxidizing acid, organic acid, cavitation), heat resistance and wear resistance. It is usually used for power plant, chemical industry, petroleum and other equipment and materials. The weldability of chrome stainless steel stamping elbow is poor, so attention should be paid to the welding process, the premise of heat treatment and the selection of appropriate welding electrodes. 2. Chrome nickel stainless steel stamping elbow has good corrosion resistance and oxidation resistance, and is…

1、 Part process analysis Since this part is a tool for balancing parts, the runout of all surfaces is required to be no greater than 0.02. Therefore, two aspects should be guaranteed in the process: 1. Machining accuracy. 2. Prevent machining deformation. The following two aspects are analyzed and discussed: ① Considering the high processing requirements, the turning process can be divided into three steps. The first step is rough machining, with 0.5~1mm left on one side. The second step is finishing after heat treatment. ② For other surfaces, the inner hole shall be considered as the benchmark for finishing.…