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Vacuum Heat Treatment Process of Cr12MoV Steel Die
1 Steel mold vacuum heat treatment technology A factory is producing the lower die of a certain mold, the size is 14×100×140 (mm), the hole tolerance of 6~12mm is required to be ±0.01 mm, the hole spacing tolerance is ±0.02mm, and the warpage of the plane is > 0.02 mm, the hardness is HRC50 ~...
Low temperature carburizing of 9Cr18 stainless steel surface
1 Introduction 9Cr18 martensitic stainless steel is the most widely used stainless steel in the bearing field. It has good corrosion resistance and its quenching hardness (58-60HRC) is lower than that of conventional bearing steel (60-64HRC). Bearing failure mainly occurs in the working surface a...
Low Pressure Vacuum Carburizing Heat Treatment Process for Transmission Gears
The automobile transmission is mainly composed of a series of gear transmission devices. These gears need to withstand a lot of friction and collision during use, so they need to improve their overall strength through heat treatment and carburizing process. In order to achieve low cost and high p...
Vacuum Brazing of K9 Glass and 2507 Stainless Steel
1 Introduction K9 glass is a ceramic optical borosilicate glass with excellent optical properties, good chemical stability, low density, extremely high glass transition temperature (Tg≈719℃) and low cost. Therefore, it is a commonly used optical and microsystem material, which can fabricate micro...
Development of aluminum foil vacuum annealing furnace
1 Introduction to structure The aluminum foil vacuum annealing furnace unit is mainly used for the finished annealing of aluminum foil coils. The surface of the workpiece after vacuum heat treatment is not oxidized and decarburized, with small deformation and good mechanical properties. The main ...
How to improve the brazing of the header of the tube and strip heat exchanger?
The main brazing defects in vacuum brazing of tube and strip heat exchanger are that the brazing joint between header and coil is not dense, faulty welding and incomplete fusion, which seriously affects the first pass rate and service life of the brazing of heat exchanger. The resulting product s...
Vacuum Interrupters Brazing
The vacuum interrupter, also known as the vacuum switch tube, is the core component of the medium and high voltage power switch. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off through the excellent insulation of th...
Vacuum Heat Treatment Process of Machine Tool Spindle
1 Principles of material selection for machine tool spindles Spindle is one of the key parts of machine tool spindle components, which mainly plays the role of supporting transmission parts and transmitting torque. The reasonable selection of main shaft materials should follow the following prin...
Different Quenching and Tempering of GCr15 Bearing Steel Balls
1 Heat treatment process of steel balls The production process of 10 mm steel ball is: cold sensitivity → stress relief annealing → soft grinding → quenching and tempering → inspection of the hardness of the steel ball after quenching and tempering, structure crushing load, etc. → transfer to gri...
Vacuum brazing of elliptical corrugated horn
Elliptical corrugated horn is an important part of the radar feeder system. As a device for transmitting high-frequency electromagnetic waves, it has complex structure and high accuracy requirements. The traditional processing method is mechanical processing, but this is not only time-consuming a...