Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure

A technology of isothermal forging and magnesium alloy, which is applied in the field of warm forging die and forging process of warm forging die, can solve the problems of magnesium alloy heating temperature and holding time, difficult plastic deformation processing, increased plastic properties, etc. The effect of uniform equiaxed fine grain structure and high yield

Inactive Publication Date: 2014-04-23
CENT SOUTH UNIV
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Problems solved by technology

[0003] The crystal structure of magnesium alloy is hexagonal close-packed, and there are only three slip systems in magnesium alloy at room temperature, which leads to brittle cracks in magnesium alloy during plastic deformation at room temperature, and it is difficult to process plastic deformation. The emergence of {1011} and slip systems increases the plasticity o

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  • Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure
  • Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure
  • Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure

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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] see figure 1 , the upper mold base 1 is fixed on the upper heating pad 12, the upper heating pad 12 is fixed on the upper water cooling plate 10, and the upper water cooling plate 10 is connected with the press; the lower mold 4 is fixed on the lower heating pad 18, and the lower heating pad The plate 18 is fixed on the lower water-cooled plate 20, and the lower water-cooled plate 20 is connected to the mobile workbench of the press. The two sides in the width direction of the upper mold 3 and the lower mold 4 are closed by plane bonding to form a closed cavity. Direction without flash. The heating system consists of an upper heating tube 11, an upper heating pad 12, a lower heating tube 17, a lower heating pad 18, an annular mold heating furnace 9, a thermocouple, and a temperature controller. When heating, the mold heating ...

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Abstract

The invention discloses an isothermal forging die and a forging technology thereof of a magnesium alloy die forge piece of step type structure. An upper die (3) and a lower die (4) are both of semi-closed structures, and in other words, the upper die (3) and the lower die (4) are both of open structures along the length direction, and of closed structures along the width direction due to flash gutters designed on the width direction of the upper die (3) and the lower die (4). One side face along the width direction of the upper die (3) and one side face along the width direction of the lower die (4) are vertical to each other, and the upper die (3) is in clearance fit with the lower die (4) on the position where the upper die (3) and the lower die (4) vertically intersect so as to form a closed cavity. The isothermal forging die and the forging technology thereof of the magnesium alloy die forge piece of step type structure can effectively reduce forging deformation resistance, enable a forging stock to obtain good plasticity, and are high in isothermal forging production efficiency.

Description

technical field [0001] The invention relates to a magnesium alloy forging die, in particular to an isothermal forging die for a magnesium alloy stepped structure die forging, and also relates to a forging process using the isothermal forging die for a magnesium alloy step structure die forging. Background technique [0002] Magnesium alloy is the lightest metal structure material at present, with the advantages of low density, high specific strength and specific stiffness, good damping and shock absorption, good electromagnetic shielding effect, excellent machining performance, stable parts size, and easy recycling. Aerospace, national defense and military industries have broad application prospects. At present, most magnesium alloy products are castings, especially die castings. Due to the fast solidification speed and wide crystallization temperature range of liquid magnesium alloys, defects such as pores, shrinkage porosity, and condensation are prone to occur during cas...

Claims

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Application Information

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IPC IPC(8): B21J13/02B21J5/00
Inventor 易幼平何海林刘楚明黄始全胡建良
Owner CENT SOUTH UNIV
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