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GB 6681-86 General Rules for Sampling of Gas Chemical Products
General Principles of Gas Chemical Products Sampling GB 6681-86 “The General Principles for Gas Chemical Products Sampling” provides criteria for sampling variety of gas chemical products, as well as provisions and modeling diagrams of sampling device. This standard effectively protects the fair ......
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SZ124 balance wheel type sand mixer operating procedures
Operating Guidelines of SZ124 Swing- type Mixing Sand Machine
1. Pre-operation Inspections
Before using the SZ124 swing-type mixing sand machine, it is necessary to check the parts of the machine. The inspection items should include the rotating parts of the motor, the belt drive, the safety p......
SK series water ring vacuum pump technical parameters
4000SV，SK Series Water Ring Vacuum Pump Technology Parameters
SK series water ring vacuum pumps are a type of high efficiency and energy-saving vacuum pump with low noise and stable performance. The series of vacuum pumps are widely used in various industries in refrigeration, food, petrochemica......
Application of RH Top Blowing Oxygen Technology
Introduction
Rh top-blowing oxygen (RHB) technology is a process technology in which oxygen or oxygen-rich gas is blown onto the surface of the molten steel to reduce the concentration of carbon, hydrogen, nitrogen and other harmful elements in molten steel. It is a new type of process technology......
Characteristic Causes of Residual Shrinkage Cavity and Its Judgment and Treatment
Introduction
Remaining shrinkage hole is a common defect in castings, caused by a number of possible factors related to the manufacturing process. This paper attempts to thoroughly review the causes and prevention of remaining shrinkage hole defects in investment castings, and to discuss various ......
Cause Analysis of Diesel Engine Difficulty in Starting
Diesel Engine Starting Difficulties
Diesel engine starting difficulty is a common problem faced by vehicles powered by diesel engines. This type of problem is potentially dangerous and can lead to serious mechanical damage or accidents. Therefore, it’s important to address this problem as quickl......
Safety operating rules that lathe workers should abide by
Rails Security Rules
Railways are an important component of our transportation infrastructure and are used to transport goods and passengers around the country. However, they can be hazardous places if operated incorrectly, so it is important to understand and obey the rules of railway security a......
Turning
Turning
Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, describes a helical toolpath by moving more or less linearly while the workpiece rotates. The tools axes of movement may be literally a linear axis, but they can also be combined into more complex mot......
Quenching medium
Quenching Media
Quenching is the rapid cooling of a metal part to obtain certain desired properties such as hardness. Quenching media is used to cool the metal part during the quenching process. The use of quenching media can affect the final properties of the part and must be chosen carefully to......
low pressure casting
Low-Pressure casting
Low-pressure casting is a casting process that uses a combination of static and dynamic forces, such as pressure, time, and temperature, to shape solidified metal into desired shapes. The process most often utilized with aluminum, but can be used with other alloys such as mag......
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