Treatment of coarse grain caused by gating riser system
(1) The failure of the sequential solidification system to realize the sequential solidification is usually the cause of the coarse […]
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The function of ultrasonic probe
The ultrasonic probe is just like its eyes for ultrasonic testing. The probe has a great influence on the test
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Characteristics and remedy of sand inclusion defects in sand casting
Defect characteristics and detection methods There are sand grains in the casting, which can appear in all parts of the
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Difference between ball valve and float valve
What is a ball valve? Ball valve is a kind of liquid level measurement and control product. It is composed
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Installation and maintenance of ball valve
Ball valve installation: It must be confirmed that the pipeline and valve have been cleaned before operation. The actuator operation
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Five kinds of surface treatment technology of aluminum alloy die casting
Aluminum alloy die-casting products are mainly used in electronics, automobile, motor, home appliances and some communication industries. Some high-quality products
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What should be done if the casting coating is easy to fall off due to bulging
The bulging of casting coating is usually the size of fingernail or larger area, which often occurs after the last
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Treatment method of coarse grain caused by casting structure and process design
Grain coarseness of castings refers to the defect that the grain structure is too coarse to be suitable for application
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Structure and characteristics of bellows gate valve
The valve rod of bellows gate valve adopts double sealing structure of bellows and packing to ensure no leakage sealing
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The complexity of industrial categories determines that China’s intelligent manufacturing should take the road of independence
The complexity of industrial categories determines that China’s intelligent manufacturing should take the road of independence China is the only
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Function and application of ball valve
Function of ball valve: The opening and closing part of the ball valve is a round ball with holes. The
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Classification of ultrasonic probes
With the continuous emergence of new technology and the continuous renewal of testing equipment, ultrasonic testing technology is one of
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Structure principle and application analysis of butterfly valve
Butterfly valve (also known as flap valve) is a kind of regulating valve with round disc or disc as its
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Difference between electric hard seal ball valve and electric soft seal ball valve
There are many kinds of ball valves. According to the different structure, connection method and valve body material, the corresponding
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Operating principle and installation instructions of butterfly valve
The relationship between the opening and flow of butterfly valve is basically linear proportional change. If it is used to
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Structure and principle of electric ball valve
The electric ball valve has the advantages of small size, light weight, small installation size, small driving torque, simple operation,
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Advantages, disadvantages and structure of butterfly valve
The opening and closing part of butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in
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Application of automation technology in machinery manufacturing
The level of mechanical automation represents the level of a country’s mechanical manufacturing capacity. As an advanced technology, automation technology
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Installation instructions for flange expansion butterfly valve
It is strictly prohibited to dismantle and disassemble the expansion flange butterfly valve at will on the pipeline construction site;
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Application, advantages and disadvantages of flange expansion butterfly valve
The butterfly plate of the flange expansion butterfly valve is installed in the diameter direction of the pipeline. In the
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The instructions for installation and use of electric flange ball valve
The working principle of electric flange ball valve is to achieve the opening and closing of the valve by driving
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The defect phenomenon and cause of the fast broken graphite in ductile iron casting
Fast graphite fragmentation The broken fast graphite is a kind of deformed graphite which often appears in the large end
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Type and classification of gate valve
Gate valve, also known as gate valve, is mainly composed of valve body, bonnet, gate, stem, valve seat and sealing
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Structure and working principle of gate valve
Gate valve construction: Gate valve refers to the valve where the gate closure moves in the vertical direction along the
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Installation steps of wafer butterfly valve
The correct installation of the clip type butterfly valve is related to the sealing degree of the butterfly valve and
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Instructions for installation of wafer butterfly valve
Wafer type butterfly valve is one of the most common valve types in industrial pipeline. The wafer type butterfly valve
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The installation and maintenance of electric ball valve
Electric ball valve is a kind of valve used to control pipeline medium and realize remote control. It is an
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Installation instructions for pneumatic ball valve
Before installation of pneumatic ball valve: Ensure that the installation position of the pneumatic ball valve is at the coaxial
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Wiring diagram description and control mode of explosion-proof electric butterfly valve
Explosion proof electric butterfly valve is a special control equipment for inflammable and explosive occasions. Its explosion-proof grade is ExdIIBT4
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Working principle of electric ball valve
The electric ball valve is mainly composed of electric actuator and ball valve. The plug body is a ball with