Category: Manufacturing Technology knowledge

1、 Arc welding Arc: a strong and lasting gas discharge phenomenon. There is a certain voltage between the positive and negative electrodes, and the gas medium between the two electrodes should be in an ionized state. When the welding arc is ignited, the two electrodes (one pole is the workpiece, the other pole is the filler wire or electrode) are usually connected to the power supply, contacted briefly and separated quickly. When the two poles contact each other, a short circuit occurs, forming an arc. This method is called contact arc striking. After the arc is formed, as long as…

1. Brazing The energy source of brazing can be either chemical reaction heat or indirect heat energy. It uses a metal with a melting point lower than the melting point of the material to be welded as the filler metal. After heating, the filler metal is melted. The capillary action moves the filler metal into the gap of the joint contact surface, wets the surface of the metal to be welded, and makes the liquid phase and solid phase mutually diffuse to form a brazed joint. Therefore, brazing is a solid and liquid phase welding method. Characteristics and Application of…

At present, as the leading industry of China's national economy, the mechanical processing industry is still the main support for China's economic growth; As an important support for economic and social development, the mechanical processing industry is the main channel of urban employment in China and the concentrated embodiment of international competitiveness. However, from the current performance, there is still a big gap between the development of China's machining industry and that of the western manufacturing powers. The road of lean transformation and development of China's mechanical processing industry is obstructed frequently, and there is a long way to go.…

The main function of shaft parts is to support other rotating parts to rotate and transmit torque, and at the same time, it is connected with the machine frame through bearings. It is one of the important parts of the machine. Shaft parts are rotary parts, whose length is greater than the diameter, and are usually composed of cylindrical surface, conical surface, internal hole, thread and corresponding end face. The shaft often has splines, keyways, transverse holes, grooves, etc. According to functions and structural shapes, shafts have many types, such as smooth shaft, hollow shaft, half shaft, stepped shaft, spline…

The "cost halving method" is not mysterious or complicated, but not every manufacturing enterprise can quickly grasp it in practice. The main reason is that to reduce costs on the premise of improving quality, it not only depends on the leadership of the enterprise, the design and development department, but also requires the joint efforts of all levels of the enterprise to gather staff skills to focus on development topics. It is not surprising that Japanese enterprises and entrepreneurs put forward the slogan of halving costs. Many Japanese manufacturing enterprises have successively transferred their production workshops overseas since the 1980s,…

01 Vacuum Plating Vacuum electroplating is a physical deposition phenomenon. That is, argon is injected in a vacuum state, and the argon hits the target. The target is separated into molecules, which are absorbed by conductive goods to form a uniform and smooth metal like surface layer. Advantages: high quality, high brightness and product surface protective layer Typical applications: surface treatment of reflective coatings, consumer electronics and heat shields Applicable materials: 1. Many materials can be vacuum plated, including metal, soft and hard plastics, composite materials, ceramics and glass. Among them, aluminum is the most commonly used for electroplating surface…

Although secondary injection molding requires more complex design, processing and material selection than single injection molding, it has significant advantages: 1. It allows material combinations to provide properties that cannot be provided by a single resin. 2. It can eliminate assembly steps, saving time and money. 3. It can fuse materials in a way incomparable to the assembly process. 4. The insert increases the strength and durability of the part. Cost reduction and rapid production Cladding molding can reduce the production cost. Standard injection molding can combine multiple parts into a single multi cavity mold, and secondary molding can produce…

Cladding molding is an injection molding process that allows adding an additional layer of resin to existing molded parts to provide a combination of properties that cannot be provided by a single material. One of the most common applications is to add a layer of soft, functional, hands-on rubber like material, usually TPE (thermoplastic elastomer), to the hard substrate. The other is to change or enhance the appearance of parts or "cosmetics" by coating materials with different colors or surface treatments. Cladding molding materials can be found on everything from medical devices and hand tools to toothbrushes, as well as…

What is a quick coupler? A quick connector is a connector that allows a line to be connected or disconnected without tools. We are familiar with some water pipe quick connectors, oil pipe quick connectors, etc. As shown in the figure, you should have seen it in your life. The quick screening editor below will introduce the quick coupler in detail. In order to adapt to the differences in the demand characteristics of different devices for quick connectors, quick connector manufacturers produce many kinds of products, but it is a trouble for many consumers. The understanding of the model of…

After years of development, the hydraulic tubing in China has become very mature. Hydraulic oil pipes are mainly used for non corrosive or corrosive media such as oil, water and gas. With the increasing demand for such products in many fields, the publicity and promotion of such products are also the focus of businesses. The hydraulic pipe joint is a component in the hydraulic system that connects the high pressure oil pipe and the high pressure oil pipe. Hydraulic couplings can also be divided into hydraulic hoses, high-pressure ball valves, quick couplings, ferrule couplings, welded couplings, high-pressure hoses, transition couplings,…