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Method for producing brake disc from resin sand

A technology of resin sand and brake discs, which is applied to casting molding equipment, molds, cores, etc., can solve the problems of rough surface finish of castings, inability to quickly demould, low dimensional accuracy, etc., to improve dimensional accuracy and surface finish, The negative number of parting is small and the sand mold strength is high

Inactive Publication Date: 2018-01-16
SHANDONG LUDA AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3: The surface finish of castings produced by clay sand is rough and the dimensional accuracy is low
[0007] The working time / demoulding time of resin sand prepared by furan no-bake resin is about 0.45. After the molding is completed, the mold cannot be demoulded quickly, and the production efficiency is low.

Method used

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  • Method for producing brake disc from resin sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Preparation of resin sand: Add PZ~Ⅲ to PZ~Ⅰ according to 1.8% of the mass of PZ~Ⅰ and stir for 30s to obtain a mixed resin, which is added to a one-component resin tank; PZ~II is added to a two-component resin tank middle; the natural quartz stone is pneumatically transported to the sand storage tank above the continuous sand mixer; the natural quartz stone, mixed resin and PZ~Ⅱ are added to the continuous sand mixer according to the mass ratio of 98.9:0.6:0.5, and the sand mixing time is 10s, get resin sand;

[0040] 2) Modeling: Put the resin sand into the sand box until it is full, and scrape the flat sand in the sand box;

[0041] 3) Mold removal: transport the molded sand box to the mold removal station through the rails, and the mold removal time is 6 minutes;

[0042] 4) Core setting: After the mold is lifted from the sand box, it is transported to the core setting area by the single-line roller table for core setting, and the core setting time is 6 minutes; ...

Embodiment 2

[0047] 1) Preparation of resin sand: Add PZ~Ⅲ to PZ~Ⅰ according to 1.8% of the mass of PZ~Ⅰ and stir for 30s to obtain a mixed resin, which is added to a one-component resin tank; PZ~II is added to a two-component resin tank middle; the natural quartz stone is pneumatically transported to the sand storage tank above the continuous sand mixer; the natural quartz stone, mixed resin and PZ~Ⅱ are added to the continuous sand mixer according to the mass ratio of 98.8:0.7:0.5, and the sand mixing time is 10s, get resin sand;

[0048] 2) Modeling: Put the resin sand into the sand box until it is full, and scrape the flat sand in the sand box;

[0049] 3) Mold removal: transport the molded sand box to the mold removal station through the rails, and the mold removal time is 6 minutes;

[0050] 4) Core setting: After the mold is lifted from the sand box, it is transported to the core setting area by the single-line roller table for core setting, and the core setting time is 6 minutes; ...

Embodiment 3

[0055] 1) Preparation of resin sand: Add PZ~Ⅲ to PZ~Ⅰ according to 1.8% of the mass of PZ~Ⅰ and stir for 30s to obtain a mixed resin, which is added to a one-component resin tank; PZ~II is added to a two-component resin tank middle; the natural quartz stone is pneumatically transported to the sand storage tank above the continuous sand mixer; the natural quartz stone, mixed resin and PZ~Ⅱ are added to the continuous sand mixer according to the mass ratio of 99:0.6:0.4, and the sand mixing time is 10s, get resin sand;

[0056] 2) Modeling: Put the resin sand into the sand box until it is full, and scrape the flat sand in the sand box;

[0057] 3) Mold removal: transport the molded sand box to the mold removal station through the rails, and the mold removal time is 6 minutes;

[0058] 4) Core setting: After the mold is lifted from the sand box, it is transported to the core setting area by the single-line roller table for core setting, and the core setting time is 6 minutes;

...

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Abstract

The invention relates to a method for producing a brake disc from resin sand. The resin sand is subjected to molding, drawing, core setting, mould assembling, pouring, cooling, sand shakeout and shotblasting so as to obtain the brake disc. The method has the characteristics of high production efficiency and high yield.

Description

technical field [0001] The invention relates to a method for producing brake discs by using resin sand. Background technique [0002] The original production of brake discs is made of clay sand. The formula of clay sand is made of silica sand plus about 1% bentonite, about 5% coal powder, and about 3% water through a sand mixer. The production line manufactures brake discs for large trucks with the following shortcoming: [0003] 1: Due to the large size of the casting, the pouring time is long, which can cause sand washing, sand drop, and sand hole defects in the casting. [0004] 2: The bonding material (bentonite) in the clay sand has relatively low refractoriness, and a large amount of dust can be generated after burning hot molten iron, and high-end equipment is required to remove these dusts. [0005] 3: The surface finish of castings produced by clay sand is rough and the dimensional accuracy is low. [0006] According to the above defects, the yield of finished pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/02B22C9/02B22C9/22
Inventor 孙文顺
Owner SHANDONG LUDA AUTO PARTS CO LTD
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