For details, please refer to the PDF file of the "Modern Parts" 2007 issue 5 or the bottom of the download page. The second difficulty of hardening the crankshaft neck fillet The crankshaft is an important part of the automobile engine. More and more engine manufacturers use induction hardening technology to strengthen the crankshaft to improve its fatigue strength and increase the service life of the crankshaft. When the crankshaft is induction hardened, the deformation of the part is often large, and the depth of the quenching layer of the connecting rod neck is not uniform, which does not meet the technical requirements. Garden Cart Seat,Garden Hose Real Cart,Garden Hose Reel Cart Yujiaxin Industry And Trade Co., Ltd. , http://www.pneumatic-wheel.com
Medical record
Registered subjects: Difficulties in engine crankshaft treatment: When the crankshaft induction hardening, there is often a large amount of deformation of the part, and the depth of the quenching layer of the connecting rod neck is not uniform, which does not meet the technical requirements.
Doctors recommend: Shiyan Tianshu Electric Co., Ltd. Min Yu Zheng, Luoyang sublimation Induction Heating Ltd. Shen Qing Tong described the difficulties <br> <br>
An engine manufacturer has a new high-powered diesel engine. The engine is imported from foreign advanced models. The crankshaft must be rounded and induction hardened. The material is made of high-quality alloy steel. It is extruded with full fiber, length 1020mm, deformation after crankshaft quenching. The amount is less than 0.5mm, the depth of the hardened layer is uniform, and the depth difference of the hardened layer of the same section is less than 0.2mm. This kind of crankshaft has strict requirements on induction hardening. Whether it can meet the technical requirements is directly related to whether the new engine can be put on the market on schedule.
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The intermediate frequency power supply adopts transistor power supply. The internal structure and control protection technology of the power supply adopts the latest electronic technology. The power supply efficiency is high, the failure rate is low, the startup success rate is high, and the complete protection function and fault diagnosis alarm function are provided. The power supply is configured to automatically switch eight power channels. When the connecting rod shaft diameter is quenched, the power pulse distribution function ensures that the hardening layer in the circumferential direction of the journal is uniform.
Crankshaft positioning mode: the center of the crankshaft and the tailstock are fixed at the center of the crankshaft, and the first spindle end faces the left and right positions of the crankshaft.
The carriage movement (left and right) adopts servo motor ball screw drive and automatic programming control. The repeating positioning accuracy of the carriage movement is not more than 0.02mm, and the spindle rotation swing is not more than 0.1mm.
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Recommended equipment
Shiyan Tianshu Electromechanical Technology Co., Ltd. TQK-1 automatic crankshaft quenching machine