Controllable cooling method for high-pressure common rail

A technology of high-pressure common rail and cooling method, which is applied in the direction of furnace type, furnace, heat treatment furnace, etc., can solve the problems that the strength and toughness cannot reach the ideal state, the product is easy to deform, and it is unfavorable to mechanical processing, etc., so as to shorten the production cycle, Reduced logistics costs and high process stability

Active Publication Date: 2014-12-03
SHANDONG JINMA INDAL GROUP
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  • Application Information

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Problems solved by technology

However, both of the above two production processes require secondary heating, resulting in waste of energy and occupying too much production equipment and human resources; in addition, products using the traditional production proc

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  • Controllable cooling method for high-pressure common rail
  • Controllable cooling method for high-pressure common rail
  • Controllable cooling method for high-pressure common rail

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[0023] Example 1

[0024] The present invention relates to a controllable cooling method for high-pressure common rail forgings of a diesel engine high-pressure common rail system. The controllable cooling method includes the following process steps: placing the forgings → controlling the temperature of the inlet line → controlling the process parameters of the quench zone → controlling the process of the stable zone Parameter→Control process parameters of slow cooling zone→Outgoing wire temperature control→Outgoing wire storage in basket. Before entering the wire, place the forgings according to the prescribed method and plane density requirements, and follow the forging production cycle. figure 1 The line placement method shown: the forging is placed perpendicular to the direction of movement of the conveyor chain; one piece is discharged every 17-25 seconds. With the rotation of the chain, it enters the rapid cooling zone through the entrance curtain; the temperature of the i...

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Abstract

The invention relates to a controllable cooling method for a high-pressure common rail. The method is a thermal treatment method for a high-pressure common rail forge piece by utilizing forging waste heat, wherein the thermal treatment onto the high-pressure common rail forge piece is realized by virtue of controllable cooling in a quenching zone, a stable zone and a slow cooling zone; an inlet temperature of the high-pressure common rail forge piece is not lower than 800 DEG C and an outlet temperature of the high-pressure common rail forge piece is not higher than 250 DEG C. By virtue of the controllable cooling method disclosed by the invention, a thermal processing process and a physical metallurgical process for improving material performances are organically combined to avoid secondary heating of a thermal treatment process; and moreover, the process stability is high and the energy resource consumption is remarkably saved; not only is a reasonable metallographic texture guaranteed to enable the obtained high-pressure common rail to have good comprehensive mechanical performances, but also the energy consumption is remarkably lowered, the logistics cost is reduced, the producing and manufacturing period is shortened, and the production cost is greatly lowered.

Description

technical field [0001] The invention relates to the technical field of engine accessories processing, and more specifically, the invention relates to a controllable cooling method for high-pressure common rails of automobile engines. Background technique [0002] The high-pressure common rail system has greatly improved the driving performance and emission performance of automobile engines. With the advancement of exhaust after-treatment technology and air-fuel ratio control technology, it is no longer at the expense of high thermal efficiency of the engine. It is very important for energy saving and environmental protection. has great significance. At present, the high-pressure common rail system has become one of the core technologies in the field of engines in the automotive industry. In our country, we have begun to break the technological monopoly of foreign countries, and gradually formed an independent core technology system. [0003] Among the high-strength materia...

Claims

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Application Information

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IPC IPC(8): C21D6/00C21D9/00C22C38/60C22C38/58C22C38/50C22C38/38C22C38/28C22C38/16C22C38/14
Inventor 赵昌德王万珍郭建春马祖文李玉田王家斌郑世念郑富元
Owner SHANDONG JINMA INDAL GROUP
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