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Overlay welding quenching unit for fungiform tappets

A technology of quenching device and positioning device, which is applied in the direction of quenching device, heat treatment equipment, furnace, etc., can solve the problems of alloy chilling crack failure, etc., and achieve the effect of prolonging service life, good economic and social benefits, and improving quality

Active Publication Date: 2014-04-30
济南沃德汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for this equipment to realize the surfacing alloy and quenching of the head of the fungus tappet, because it cannot solve the problem of local quenching of the quenching medium—water while the tappet is positioning the surfacing head, especially if the quenching water Spraying directly on the surfacing alloy will cause chilling crack failure of the alloy

Method used

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  • Overlay welding quenching unit for fungiform tappets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, a surfacing and quenching device for fungal tappets, is characterized in that it is composed of a tappet surfacing positioning device, a quenching and cooling device, and an induction heating device 5, and the induction heating device is a copper tube Or the ring heater whose inner circle diameter is matched with the tappet plate formed by bending and welding the copper plate, and the two ends of the heater are connected with the high-frequency power supply bolts,

[0015] The tappet surfacing positioning device includes a cylindrical surfacing base 2 with a base fixing flange 22, a support nozzle 3 that can slide up and down is installed in the inner cylinder of the base, and a blind hole type tappet is arranged in the support nozzle. Column positioning sleeve 31,

[0016] The quenching and chilling device includes a support nozzle threadedly connected to the upper water pipe 1, an annular water channel 32 is provided between the nozzle seat 33 of the sup...

Embodiment 2

[0018] Embodiment 2, a surfacing and quenching device for fungal tappets, is characterized in that it is composed of a tappet surfacing positioning device, a quenching and cooling device, and an induction heating device 5, and the induction heating device is a copper tube Or the ring heater whose inner circle diameter is matched with the tappet plate formed by bending and welding the copper plate, and the two ends of the heater are connected with the high-frequency power supply bolts,

[0019] The tappet surfacing positioning device includes a cylindrical surfacing base 2 with a base fixing flange 22, a support nozzle 3 that can slide up and down is installed in the inner cylinder of the base, and a blind hole type tappet is arranged in the support nozzle. Column positioning sleeve 31,

[0020] The quenching and chilling device includes a support nozzle threadedly connected to the upper water pipe 1, an annular water channel 32 is provided between the nozzle seat 33 of the sup...

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Abstract

The invention discloses an overlay welding quenching unit for fungiform tappets, particularly special equipment for butt welding quenching of valve tappets, belonging to heat treatment equipment. The invention is characterized in that the overlay welding quenching unit is composed of a tappet overlay welding positioning device, a quenching chilling device and an induction heater. According to the structural features of the fungiform tappet, the invention provides a tappet fixing unit and an elevation-type spray quenching unit to solve the problem of incapability of directly implementing spray quenching from the ball socket part of the existing equipment since the ball socket of the fungiform tappet is at the end of the tappet and is far from the spray quenching unit. The invention provides brand-new equipment for overlay welding quenching of fungiform tappets, which can improve the quality of the tappet and prolong the service life. The overlay welding quenching unit for fungiform tappets has favorable economic and social benefits.

Description

technical field [0001] The invention belongs to heat treatment equipment, in particular to special equipment for butt welding and quenching of valve tappets. Background technique [0002] The tappet is a key component in the engine. The function of the tappet is to transmit the thrust of the cam to the push rod or valve stem, and to bear the lateral force exerted by the camshaft when it rotates. The hardness and wear resistance of the tappet and cam contact area are particularly critical. Therefore, the treatment technology around the head of the tappet is divided into many methods, such as: cold shock treatment, brazing alloy, nitriding treatment, surfacing alloy, etc. Tappets can be divided into cylindrical structure tappets and mushroom-shaped tappets from the external shape. The existing tappet quenching technology is aimed at high-frequency welding quenching of cylindrical structure tappets. The realization device is an induction coil and an upper After heating and we...

Claims

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Application Information

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IPC IPC(8): C21D1/667C21D9/50
Inventor 王磊刘明周广超陈雪萍樊敏娇
Owner 济南沃德汽车零部件有限公司
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