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Because the stamping die often loses its working size due to wear in the production process, it is difficult to meet the production requirements. Therefore, it is critical to improve the durability of stamping dies. This paper introduces several methods to improve the durability of stamping dies. Several ways to help improve the durability of stamping dies Improving the Design of Stamping Die Whether the design of stamping die is reasonable is the basis of improving the durability of stamping die. Therefore, effective measures should be taken to improve the durability of the stamping die when designing the stamping die,…

The material used to make sand mold is called molding material, the material used to make sand mold is generally called molding sand, and the molding material used to make sand core is called core sand. Generally, molding sand is composed of raw sand (mountain sand or river sand), clay and water in a certain proportion, of which clay is about 9%, water is about 6%, and the rest is raw sand. Sometimes a small amount of additives such as coal powder, vegetable oil and wood chips are added to improve the properties of molding sand and core sand. The…

Transparent plastics are widely used in life and have become one of the necessities. Transparent plastic products should be strictly operated in terms of raw material preparation, equipment and mold requirements, injection molding process and raw material handling of products. 1、 The preparation and drying of materials may affect the transparency of products due to any impurities contained in the plastic, so it is necessary to store and transport the materials. During the feeding process, attention must be paid to sealing to ensure that the raw materials are clean. In particular, the raw materials contain water, which will deteriorate after…

The production of PET blow molding bottles can be divided into injection stretch blow molding (injection stretch blow molding for short) and extrusion stretch blow molding (extrusion stretch blow molding for short) according to the different preforms of parison. The process of injection, drawing and blowing is that the preform with bottom is injected first, and then it is continuously sent to the heating furnace (infrared or electric heating) by the conveyor belt after cooling, and then it is heated to the stretching temperature, and then it is brought into the blowing mold for axial stretching with the help of…

Machining is the abbreviation of mechanical processing, which refers to the processing technology of accurately removing materials through processing machinery. Mechanical processing mainly includes manual processing and numerical control processing. Manual processing refers to the method of processing various materials by mechanical workers manually operating milling machines, lathes, drilling machines, sawing machines and other mechanical equipment. Manual processing is suitable for small batch and simple parts production. Numerical control machining (CNC) refers to the use of CNC equipment by machinists for machining, including machining centers, turning and milling centers, wire EDM equipment, thread cutting machines, etc. At present, the vast…

Ductile iron is an important casting metal material developed in recent 40 years in China. The tensile strength, plasticity and toughness of nodular cast iron are higher than those of other cast iron due to the small stress concentration caused by spherical graphite and the small splitting effect on the matrix. Compared with steel with corresponding structure, the plasticity is lower than that of steel, the fatigue strength is close to that of ordinary medium carbon steel, the yield ratio can reach 0.7~0.8, almost twice that of ordinary carbon steel, and the cost is lower than that of steel, so…

Cast iron is an iron carbon alloy with a carbon content of more than 2.11% (generally 2.5~4%). It is a multi-component alloy with iron, carbon and silicon as the main components and more impurities such as manganese, sulfur and phosphorus than carbon steel. Sometimes, in order to improve the mechanical properties or physical and chemical properties of cast iron, a certain amount of alloy elements can be added to obtain alloy cast iron. 1、 Classification of cast iron According to the different forms of carbon in cast iron, cast iron can be divided into: 1. White cast iron Carbon exists…

There are many advantages to using copper for machining parts. Copper is one of the most widely used metals in the world, with high corrosion resistance and good conductivity and thermal conductivity. In this article, we will discuss the processing methods, design considerations and processing requirements of copper and copper alloys, which are not only aesthetic benefits. Copper processing technology Pure copper is difficult to process because of its high ductility, plasticity and toughness. Alloyed copper improves its machinability, and even makes copper alloys easier to machine than most other metal materials. Most machined copper parts are made of copper…

When you finish CNC machining of parts, your work is not finished. These original components may have an ugly surface, may not be strong enough, or may only be part of a component, which must be connected with other components to form a complete product. After all, how often do you use a device made up of a single component? The key point is that the post-processing process is necessary for a series of applications. Here we introduce some precautions so that you can choose the correct secondary operation for your project. In this three part series, we will introduce…

We have encountered many problems regarding the best way to fasten different 3D printing components. For example, when prototyping hardware products, it is usually necessary to make more complex assembly structures than a single 3D printing component, such as electronic enclosures or robot components. Sometimes, you may need to print the components of the building package of a 3D printer that is too large, so you need to consider the method of permanently or intermittently assembling the printing parts. One method of assembling 3D parts is to use snap fit components, but another good method is to use threads. There…