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Gear casting method

A gear and gear cavity technology, applied to casting molding equipment, casting molds, casting mold components, etc., can solve problems such as high production costs, insufficient structural strength, hidden safety hazards in transmission systems, etc., to improve casting precision and production efficiency , the effect of high structural strength

Inactive Publication Date: 2019-08-27
XUZHOU XIANGQIAO MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gear is one of the important parts in the transmission system, which mainly plays the role of transmitting power and torque; in the prior art, the gear will fail after a long time of use, such as pitting, cracks and fractures. Once the gear fails, it will be damaged The entire transmission system causes safety hazards, and the existing gear casting method has the defects of low raw material utilization rate, high production cost and insufficient structural strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The present invention proposes a gear casting method, comprising the following steps: S10: manufacture an upper mold and a lower mold of a gear with a gate, and the upper mold and the lower mold can cooperate to form a gear cavity; S20: fix the upper mold and the lower mold Put the connection into the sand box, and lay the bottom sand to fix the upper and lower molds in the sand box, place the sand box on the vibrating table and vibrate the bottom sand, and then fill the sand in layers, and fill the sand while filling Vibration to ensure the sand filling is tight, and a sprue connected to the gear mold cavity is left; S30: The pre-prepared molten steel with a temperature of 1350°C is poured into the sand box along the sprue to form the upper mold and the lower mold In the gear mold cavity, uniform and continuous pouring is adopted during the pouring operation; S40: Move the sand box to the molding sand treatment place, cool naturally to 300°C, keep warm for 0.2h, and the...

Embodiment 2

[0018] The present invention proposes a gear casting method, comprising the following steps: S10: manufacture an upper mold and a lower mold of a gear with a gate, and the upper mold and the lower mold can cooperate to form a gear cavity; S20: fix the upper mold and the lower mold Put the connection into the sand box, and lay the bottom sand to fix the upper and lower molds in the sand box, place the sand box on the vibrating table and vibrate the bottom sand, and then fill the sand in layers, and fill the sand while filling Vibration to ensure the sand filling is tight, and a sprue connected to the gear mold cavity is left; S30: The pre-prepared molten steel with a temperature of 1550°C is poured into the sand box along the sprue to form the upper mold and the lower mold In the gear mold cavity, uniform and continuous pouring is adopted during the pouring operation; S40: Move the sand box to the molding sand treatment place, cool naturally to 500°C, keep it warm for 0.6h, and ...

Embodiment 3

[0020] The present invention proposes a gear casting method, comprising the following steps: S10: manufacture an upper mold and a lower mold of a gear with a gate, and the upper mold and the lower mold can cooperate to form a gear cavity; S20: fix the upper mold and the lower mold Put the connection into the sand box, and lay the bottom sand to fix the upper and lower molds in the sand box, place the sand box on the vibrating table and vibrate the bottom sand, and then fill the sand in layers, and fill the sand while filling Vibration to ensure the sand filling is tight, and a sprue connected to the gear mold cavity is left; S30: The pre-prepared molten steel with a temperature of 1450°C is poured into the sand box along the sprue to form the upper mold and the lower mold In the gear mold cavity, uniform and continuous pouring is adopted during the pouring operation; S40: Move the sand box to the molding sand treatment place, cool naturally to 400°C, keep it warm for 0.4h, and ...

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PUM

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Abstract

The invention discloses a gear casting method which comprises the following steps that an upper die and a lower die of a gear with a sprue are manufactured, and the upper die and the lower die are matched to each other to form a gear die cavity; the upper die and the lower die are fixedly connected with each other, the connected upper die and lower die are put in a sand box, bottom sands are laidto fix the upper die and the lower die in the sand box, the sand box is put on a vibration workbench, and the bottom sands are compacted; pre-prepared molten steel with the temperature being 1350-1550DEG C is poured into the gear die cavity formed by the upper die and the lower die in the sand box along a pouring gate; the sand box is moved to a molding sand processing position for natural cooling to 300-500 DEG C, heat preservation is performed for 0.2-0.6h, natural cooling is performed until to the temperature of the sand box achieves a room temperature, and molding sands and a gear productare poured out together; the upper die and the lower die are detached, and demolding treatment is performed; and burr polishing and thermal baking shaping are performed on the gear in the step to finish after-treatment, and the product is warehoused after being qualified by light inspection. By adopting the gear casting method, the utilization rate of steel, the casting precision and the production efficiency are improved, and the structural strength is high.

Description

technical field [0001] The invention relates to the field of casting, in particular to a gear casting method. Background technique [0002] Casting process is one of the basic processes of modern machinery manufacturing process. Metal component casting is to smelt metal into a certain liquid metal, pour it into the cavity of the casting, and obtain the predetermined shape of the workpiece after cooling. Gear is one of the important parts in the transmission system, which mainly plays the role of transmitting power and torque; in the prior art, the gear will fail after a long time of use, such as pitting, cracks and fractures. Once the gear fails, it will be damaged The entire transmission system causes potential safety hazards, and the existing gear casting method has the defects of low raw material utilization rate, high production cost and insufficient structural strength. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the pr...

Claims

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Application Information

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IPC IPC(8): B22C9/02B22C9/22
CPCB22C9/02B22C9/22
Inventor 孙文法高峰孙磊
Owner XUZHOU XIANGQIAO MACHINERY CO LTD