Induction Preheating Technology of Aluminum Cylinder Block Cast Iron Cylinder Liner of Four-cylinder Engine

A technology of engine and cylinder liner, which is applied in the field of induction preheating process of aluminum cylinder block cast iron cylinder liner of four-cylinder engine, can solve the problems of difficulty in ensuring temperature uniformity, difficulty in automatic casting production, low production efficiency, etc., and achieves high promotion and application value , high production efficiency and reasonable structure

Inactive Publication Date: 2016-04-20
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has high energy consumption, low production efficiency, no heat preservation measures after leaving the furnace, difficulty in ensuring temperature uniformity, and difficult realization of casting automation production

Method used

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  • Induction Preheating Technology of Aluminum Cylinder Block Cast Iron Cylinder Liner of Four-cylinder Engine
  • Induction Preheating Technology of Aluminum Cylinder Block Cast Iron Cylinder Liner of Four-cylinder Engine
  • Induction Preheating Technology of Aluminum Cylinder Block Cast Iron Cylinder Liner of Four-cylinder Engine

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Experimental program
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Effect test

Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] like figure 1 As shown, the four-cylinder engine aluminum cylinder block cast iron cylinder liner preheats the sensor at the same time. Plate 7 and solenoid type effective ring 8; the middle of the contact plate is connected with an insulating plate, and both sides of the contact plate are connected with a cooling water inlet pipe and a cooling water outlet pipe; it is characterized in that: the solenoid type effective ring 8 is four One, the upper part is fixed by the fixed plate 7, the effective circle has three turns of winding and the spiral direction is the same, two strings and two parallel connections, in which the effective circle A and the effective circle B are connected through a series transition wire 1, and the effective circle C and the effective circle D are connected through a series connection The transition wires 1 are connected, and then the two g...

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Abstract

The invention relates to an induction preheating process for cast iron liners of aluminum cylinder bodies of a four-cylinder engine, which is characterized in that the preheating process for the liners is as follows: when a button is started, an inductor is dislodged and is vertically went down quickly at a preset speed of 1200mm / min into inner bores of the liners; when the lower end faces of four effective rings are 10mm over the lower end face of the liners, the inductor stops going down, carries out heating with the preset power of 88kW and delaying for 9.5 seconds; after the statically heating and delaying are finished, the inductor goes up at a preset speed of 300mm / min and carries out continuous scanning and heating; when the upper end faces of the four effective rings are 10mm over the upper end face of the liners, the inductor stops going up, carries out heating with the preset power of 88kW and delaying for 7 seconds; after the statically heating and delaying are finished, the inductor goes down at a preset speed of 1200mm / min into the inner bores of the liners to repeat the above preheating process again; and after twice cycle preheating processes are finished, the inductor goes up quickly at the speed of 1200mm / min to be away from the liners and back to the place. According to the invention, the distribution of axial temperature of the liners is uniform; and the external diameters of the four effective rings can be regulated simultaneously to enable the heating efficiency of the liners to be consistent, the cylinders are heated in a reciprocating heating mode, the heating and the diffusing homeothermy are carried out at the same time, the heating time is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to an induction preheating process for a cast iron cylinder liner of an aluminum cylinder block of a four-cylinder engine, and belongs to the technical field of induction heating. Background technique [0002] Low-alloy cast iron cylinder liners need to be preheated before casting the aluminum cylinder block of the engine to ensure the fluidity of aluminum water and eliminate casting defects. The traditional process adopts the heating method in the furnace. The cast iron cylinder liner is heated to about 500oC through a conventional heat treatment furnace, and then fixed on the casting sand core of the aluminum cylinder body with temperature to carry out aluminum water casting, and finally the cylinder liner and the aluminum cylinder body are completed. Casting process. This process has high energy consumption, low production efficiency, no heat preservation measures after leaving the furnace, difficulty in ensuring temperature u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/10
Inventor 李航宇崔凯姜波
Owner CHINA FIRST AUTOMOBILE
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