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Excavator guide assembly guiding aluminum wheel mould and die casting process

A technology of guide components and excavators, applied in the field of die-casting molds, can solve the problems of low production efficiency and high cost, and achieve the effects of reduced production costs, improved production efficiency, and small sand holes

Inactive Publication Date: 2012-11-14
GUIZHOU YUGAO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Provide a die-casting mold and production process suitable for the guide aluminum wheel of the guide assembly of the excavator, so as to solve the problems of high cost and low production efficiency existing in the sand casting or hard mold casting of the existing thick-walled parts

Method used

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  • Excavator guide assembly guiding aluminum wheel mould and die casting process

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Embodiment

[0015] Example: This example is a die-casting mold and production process parameters for the aluminum wheel of the guide assembly of an excavator. The shape of the casting is a disc, with a diameter of 350 mm and a thickness of 50 mm. This casting was originally made by casting or hard mold casting.

[0016] Such as figure 1 , The thickness of the gap gate of the design mold is 20mm, the cross-sectional area of ​​the slag discharge bag is 40mm×100mm, and a total of 9 are distributed outside the circumference. Use 1000T die casting machine for die casting, die casting machine accumulator pressure 11Mpa, casting cycle 4min, holding temperature 650~680℃, injection speed 0.3m / s, aluminum liquid used is ZL107, ADC10 or ADC12, total weight 3310 g.

[0017] Casting properties after molding: density 2.5~2.9g / cm 2 , The casting hardness is HB100, the tensile strength is greater than 271Mpa, and the elongation is greater than 3%.

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Abstract

The invention discloses an excavator guide assembly guiding aluminum wheel mould and a die casting process. The excavator guide assembly guiding aluminum wheel mould comprises a slit gate (1), slagging ladles (2) and a cavity (3), wherein the thickness of the slit gate (1) is 15-20mm; a sectional area of each slagging ladle (2) is 30mm*80mm-40mm*100mm, and 7-10 slgging ladles are annularly distributed around the cavity (3). In a die casting process, the injecting force used by a die-casting machine is 10-15Mpa, and the filling speed is 0.5-2m / s. According to the invention, the problems of high cost and low production cost existing when an existing thick walled casting is molded by casting through a casting molding hard mould are solved. Precise aluminum alloy casting molding is adopted to replace a large alloy piece casting molding process, so that the production cost is greatly reduced, the production efficiency is greatly improved, and the performances of produced castings reach the standard.

Description

technical field [0001] The invention relates to a die-casting mold for thick-walled castings, and also relates to a production process using the mold. Background technique [0002] There is an excavator guide assembly guide aluminum wheel, the casting is disc-shaped, with a diameter of 254-383mm and a thickness of 36-60mm (the ideal wall thickness of the casting is 3-5 mm). The traditional molding method is sand casting or hard mold casting. There are two outstanding problems in forming by traditional die-casting methods: one is that the technical quality indicators cannot meet the requirements for use. The prominent performances are: internal pores and trachomas in the product, poor tissue density, poor strength, a large number of pores, large and many trachomas on the processed surface after subsequent processing. First, the production cost is high and the production efficiency is low. The reasons are: the volume and weight of non-product parts reach 1.5-2.5 times / piece ...

Claims

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Application Information

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IPC IPC(8): B22D17/22B22D17/00
Inventor 付书进余文广杨双元刘庆午李长荣江祖黔
Owner GUIZHOU YUGAO ELECTRONICS
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