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What is butt welding? (3)- flash butt welding
Flash butt welding Flash butt welding can be divided into continuous flash butt welding and preheated flash butt welding. Continuous flash butt welding consists of two main stages: the flash stage and the upsetting stage. Preheating flash butt welding only adds a preheating stage before the flashing stage. One, two stages of flash butt welding […]
What is butt welding? (2)
2. Welding cycle, process parameters and workpiece preparation for resistance butt welding 1, welding cycle During resistance butt welding, the two workpieces are always pressed tightly. When the end face temperature rises to the welding temperature Tω, the distance between the end faces of the two workpieces is as small as a few angstroms. The […]
What is butt welding? (1)
Butt resistance welding (hereinafter referred to as butt welding) is a type of resistance welding method that uses resistance heat to weld two workpieces along the entire end surface at the same time. Butt welding has high productivity and easy automation, so it is widely used. Application of butt welding: Butt welding has high productivity […]
Classification and characteristics of welding
Metal welding can be divided into three categories: fusion welding, pressure welding and brazing according to the characteristics of the process. The characteristics are: 1. Fusion welding: heat the workpiece to be joined to partially melt it to form a molten pool. The molten pool will be joined after cooling and solidification. If necessary, a […]
Valve model establishment and meaning
The latest valve model compilation method Nowadays, there are more and more types of valves and materials, and the compilation of valve models is becoming more and more complicated. The standardization of valve models provides convenience for valve design and selection. Although my country has a unified standard for valve model compilation, it is gradually […]
Types of valve accessories
Types of valve accessories: The valve itself is composed of a valve body and various operating mechanisms, which also contain many parts and accessories, including manual, pneumatic, electric and so on. The components assembled in different ways of use are also different. Valve accessories mainly include: 1. Pneumatic actuator: It is mainly divided into single-acting […]
Working principle diagram of three-way valve
What is a three-way valve? Simply put, a three-way valve has three inlets and outlets; when the three-way merges, there are two in and one out, and the three-way split is one in and two out. It is controlled according to the shape of the spool. The most obvious difference in appearance between a three-way […]
World Famous Valve Brand Ranking
If you talk about trusted brands abroad, different valves have different manufacturers, and each imported valve company is involved in different fields, and each brand has its own advantages. The explanation for imported valve brands is to let users know more about imported valve brands. It is a comprehensive selection based on the brand awareness, […]
What is the difference between lining and vulcanized valve seat?
There are three types of rubber seat. One is a soft seat, which can be installed and removed at will. It is elastic; the other is a backrest seat, which is a hard seat. The seat is knocked into the valve by external force. The body, but it can also be disassembled, which is much […]
Types and working principles of electric valves
The so-called electric valve, as its name implies, is to drive the opening and closing of the valve through the power supply. It is mainly composed of two parts. The upper part is an electric actuator and the lower part is a valve. In industrial processes, it is used to control the travel and flow […]