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Method for predicting gas entrapment and controlling speed of metal liquid in intelligent shot chamber of die casting machine

A liquid entrained gas prediction and speed control technology, applied in computer-aided design, instrumentation, CAD technology, etc., can solve problems such as pores, and achieve the effect of improving yield, reducing product defects, and smooth flow

Inactive Publication Date: 2020-04-10
NINGBO HAITIAN METAL MOLDING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, the turbulent flow of molten metal into the mold cavity will also cause porosity

Method used

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  • Method for predicting gas entrapment and controlling speed of metal liquid in intelligent shot chamber of die casting machine
  • Method for predicting gas entrapment and controlling speed of metal liquid in intelligent shot chamber of die casting machine
  • Method for predicting gas entrapment and controlling speed of metal liquid in intelligent shot chamber of die casting machine

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The invention discloses a speed control technical method that can be used to solve the difficult problem of analyzing the gas entrainment speed of liquid metal in a pressure chamber. The specific steps are:

[0023] (1) According to the process parameters of the die-casting machine, determine the size of the pressure chamber of the die-casting machine, the length of the pressure chamber L, the diameter of the pressure chamber D, the mass m and density ρ of the metal solution, and calculate the fullness F of the die-casting machine before injection;

[0024] Formula one:

[0025] According to the mechanical parameters of the pressure chamber, the mathematical model of the molten metal liquid moving in the pressure chamber can be calculated by the following formula;

[0026] Formula two:

[0027]

[0028] In the formula: t is th...

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Abstract

The invention provides a method for predicting gas entrapment and controlling speed of metal liquid in an intelligent shot chamber of a die casting machine. Product defects can be effectively reduced,and the performance of castings is improved; the critical speed and acceleration of the metal liquid are calculated mainly by constructing a mathematical model of a fluctuation process formed by a shot chamber metal melt during the movement process of a hammerhead, combined with the comparative judgment of the hammerhead speed, selecting of a reasonable hammerhead acceleration can be effectivelyassisted, a group of suitable hammerhead speed and acceleration are finally provided according to calculation results, so that the liquid metal flows more smoothly in the shot chamber, and meanwhile,the gas entrapment and gas trapping of the metal liquid in the shot chamber are effectively avoided; and the gas entrapment and gas trapping of the metal liquid in the shot chamber can be effectivelyavoided.

Description

technical field [0001] The invention relates to a method for predicting and controlling liquid metal entrainment in an intelligent pressure chamber of a die-casting machine, in particular to a method for adjusting the injection speed of a die-casting process. Background technique [0002] As one of the high-efficiency, less-chip precision metal forming technologies, the die-casting process has the characteristics of high production efficiency, high product dimensional accuracy, good product surface finish, and easy automation; its development has been used in transportation, communications, electronic products, hardware, etc. , construction, military and many other fields. Die-casting parts for automobiles, as the largest market in the die-casting industry, has developed rapidly in recent years. With the increase in automobile production and the popularization of family cars, comprehensive indicators such as environmental protection, energy saving, and emission reduction hav...

Claims

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Application Information

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IPC IPC(8): B22D17/00G06F30/28G06F111/00
CPCB22D17/00
Inventor 程鹏徐建华陈列王伟
Owner NINGBO HAITIAN METAL MOLDING EQUIP CO LTD