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Temperature control method in process of semi-solid alloy pulping

A temperature control method and pulping process technology, applied in the field of light alloy semi-solid rheological die-casting production and die-casting forming, to achieve the effect of high temperature accuracy and small error

Active Publication Date: 2018-11-06
ZHUHAI RUNXINGTAI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems described above

Method used

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  • Temperature control method in process of semi-solid alloy pulping
  • Temperature control method in process of semi-solid alloy pulping
  • Temperature control method in process of semi-solid alloy pulping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Set the distance between the laser thermometer and the spoon as 268mm; the distance between the laser thermometer and the injection chamber as 240mm.

[0045] The temperature of the alloy liquid scooped by the soup machine is monitored by a laser thermometer to be 655°C, and the holding furnace control program controls the holding furnace to heat for 20 minutes; and the pulping machine control program controls the stirring time of the pulping machine to be 18 minutes, and controls the cooling The feeding rate of the medium is 16L / min, and the stirring speed of the pulper is 1350rpm. The temperature of the semi-solid slurry was measured at 609°C, and the semi-solid slurry was sent into the injection chamber for die-casting;

[0046] The die-casting program controls the time for the semi-solid slurry to be sent from the pulp machine to the injection chamber to be 3.9s, and the temperature of the semi-solid slurry in the injection chamber is monitored by a laser thermomete...

Embodiment 2

[0048] Set the distance between the laser thermometer and the spoon as 280mm; the distance between the laser thermometer and the injection chamber as 240mm.

[0049] The temperature of the alloy liquid scooped by the soup machine is monitored by a laser thermometer to be 675°C. The control program of the holding furnace controls the heating of the holding furnace to stop heating, and the control program of the pulping machine controls the stirring time of the pulping machine to be increased to 23s. The intake of cooling medium is increased to 24L / min, and the stirring speed of the pulper is 1670rpm; when the temperature of the alloy liquid reaches 610°C, the semi-solid slurry is sent into the injection chamber for die-casting;

[0050] The die-casting program controls the time for the semi-solid slurry to be sent from the pulp machine to the injection chamber to be 3.5s, and the temperature of the semi-solid slurry in the injection chamber is monitored by a laser thermometer to...

Embodiment 3

[0052] Set the distance between the laser thermometer and the spoon as 275mm; the distance between the laser thermometer and the injection chamber as 240mm.

[0053] The temperature of the alloy liquid scooped by the soup machine is monitored by a laser thermometer to be 650°C. The control program of the holding furnace controls the holding furnace to heat for 36 minutes; and the control program of the pulping machine controls the stirring time of the pulping machine to be 24s and controls the cooling. The feeding rate of the medium is 28L / min, and the stirring speed of the pulper is 1280rpm. The temperature of the semi-solid slurry was measured at 608°C, and the semi-solid slurry was sent into the injection chamber for die-casting;

[0054] The die-casting program controls the time for the semi-solid slurry to be sent from the pulper to the injection chamber to be 4.5s, and the temperature of the semi-solid slurry in the injection chamber is monitored by a laser thermometer t...

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Abstract

The invention discloses a temperature control method in the process of semi-solid alloy pulping. The temperature control method comprises the following steps that whether the temperature of alloy liquid ladled to a liquid machine is at a first predetermined temperature or not is monitored by a thermodetector arranged on the liquid machine; when the temperature of the alloy liquid is lower than thefirst predetermined temperature, a first corrective measure is taken; or when the temperature of the alloy liquid is higher than the first predetermined temperature, a second corrective measure is taken; and after the temperature of semi-solid slurry in a pulping machine monitored by the thermodetector is at the second predetermined temperature, the semi-solid slurry is fed into an injection chamber. The temperature of the semi-solid slurry can be accurately monitored and controlled in real time by adopting the temperature control method, and the temperature of the prepared semi-solid slurrycan be strictly controlled at 600+ / -3 DEG C, the solid phase ratio of the semi-solid slurry is 15-35%, the granular crystal size of semi-solid products is less than 60 [mu]m, and the qualified rate ofthe semi-solid products reaches more than 98%.

Description

technical field [0001] The invention belongs to the technical field of light alloy semi-solid rheological die-casting production and die-casting forming, and in particular relates to a temperature control method in the pulping process of light alloy semi-solid alloy. Background technique [0002] Semi-solid forming technology is an advanced metal processing technology. In recent years, research on semi-solid rheological die-casting technology has achieved certain results. Semi-solid rheological die-casting technology has profoundly changed the traditional high-pressure die-casting production method. Semi-solid forming technology has broken the traditional dendritic solidification mode. The granular grain structure has increased the density of the casting, and the overall performance of the casting has been improved. [0003] The pulping method currently used in semi-solid industrial die-casting production is the mechanical stirring method. The advantage of the mechanical sti...

Claims

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Application Information

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IPC IPC(8): B22D17/20B22D17/32
CPCB22D17/007B22D17/20B22D17/32
Inventor 任怀德张莹王继成李谷南王勇
Owner ZHUHAI RUNXINGTAI ELECTRICAL
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