DATONG HYDRAULIC/OEM hydraulic cylinder testing before delivery/hydrauli...

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What is difference between induction hardening and quenching?

  Induction hardening is a type of surface hardening in which a metal part is induction-heated and then quenched. The quenched metal undergoes a martensitic transformation, increasing the hardness and brittleness of the part. Induction hardening is used to selectively harden areas of a part or assembly without affecting the properties of the part as a whole. Induction heating is a non contact heating process which uses the principle of electromagnetic induction to produce heat inside the surface layer of a work-piece. By placing a conductive material into a strong alternating magnetic field, electric current can be made to flow in the material thereby creating heat due to the I2R losses in the material. In magnetic materials, further heat is generated below the curie point due to hysteresis losses. The current generated flows predominantly in the surface layer, the depth of this layer being dictated by the frequency of the alternating field, the surface power density, the permeabil...
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WHAT IS DEAD ROLLER SHAFT AND LIVE ROLLER SHAFT

 live shaft and dead shaft rollers can be used for the same application and the choice is a function of the machine’s mounting system. But at other times, the differences between the two designs mandate a clear choice.  DEAD  ROLLER  SHAFT S: Roller design is bearings pressed into the ends of a hollow tube (the roller body) with a long shaft running through the bearings and extending out the ends of the rollers. The roller is considered to be a “dead shaft” because the shaft does not turn. The shaft is fixed to the machine or frames mounting system by clamping or bolting and the roller body turns about the shaft via the bearings. Roller shells can be steel, aluminum, or carbon fiber and many times are thin-walled, making them ideal for light load and high-speed web applications. Commonly used as idler rollers due to light-weight, low-turning inertia and the availability of low friction bearings which reduce roller drag. Roller rods  must be web or nip driven bec...
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What is ST52 Steel Plate

The ST 52 belongs to a standard structural steel grade. A  St 52 Steel Plate   is designed with a superior chemical composition of carbon, silicon, manganese, phosphorous, and sulfur. The content embedded in these plates gives them enhanced resistance to corrosive and oxidative media. The St52 Plate is designed for thickness above 6mm and more. These plates have enhanced resistance to pitting and crevice corrosion. They provide good stability and support to different applications. St52-3 Plate is a low manganese carbon grade that doesn’tputs pressure on subsequent modules. These robust plates can be easily welded in place following standard procedures. The versatile St52 3 Steel showcase slightly lower strength and tolerance compared to an St52 plate. These lightweight components comply with different national and international standards. The St52 Steel Sheetis produced in thicknesses below 6mm and above 0.5mm. These sheets don’t provide stability and add an aesthetical appeal...
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