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Preparation method of brake disc

A technology for brake discs and preparation steps, which is applied in the field of brake disc casting, which can solve the problems of increased labor load, large dust in foundry workshops, and many sand mold manufacturing processes, and achieve the effects of saving manpower, improving the working environment, and reducing production costs

Active Publication Date: 2018-01-16
宁波铭汇金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned casting process requires a large amount of sand, and there are many sand mold manufacturing processes, and the subsequent sand cleaning task is heavy. Workers need a large workload of sand blasting, which greatly increases the labor load of workers, and the foundry workshop is dusty and the production cost is high.

Method used

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  • Preparation method of brake disc
  • Preparation method of brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) First, mix Bonnie No. 2 thermosetting resin with quartz sand to obtain the sand material for preparing the brake disc sand shell. The usage amount of Bonnie No. 2 thermosetting resin is 1.6% of the weight of the quartz sand;

[0021] (2) Then put the sand prepared in step (1) into the sand machine, heat the sand to 150-155°C, and then blast the mold under a pressure of 5 atmospheres to obtain sand with a brake disc cavity Shell, sand shell is naturally cooled for use, the thickness of sand shell is 40mm;

[0022] (3) Prepare the raw materials of the brake disc according to the following weight percentages: carbon (C) 0.20%, manganese (Mn) 0.80%, silicon (Si) 0.5%, chromium (Cr) 1.25%, molybdenum (Mo) 1.0%, nickel (Ni) 0.5%, vanadium (V) 0.32%, sulfur (S) 0.03%, phosphorus (P) 0.03%, the balance is iron; then the raw materials are mixed and heated to 1000-1050°C and then melted Pour the molten metal into the sand shell prepared in step (2);

[0023] (4) After the pouring ...

Embodiment 2

[0025] (1) First, mix Bonny No. 2 thermosetting resin with quartz sand to obtain sand for preparing the brake disc sand shell. The use amount of Bonny No. 2 thermosetting resin is 1.8% of the weight of quartz sand;

[0026] (2) Then put the sand prepared in step (1) into the sand machine, heat the sand to 155-160°C, and then blast the sand under a pressure of 6 atmospheres to obtain sand with a brake disc cavity Shell, sand shell is naturally cooled for use, the thickness of the sand shell is 45mm;

[0027] (3) Prepare the raw materials of the brake disc according to the following weight percentages: carbon (C) 0.25%, manganese (Mn) 1.00%, silicon (Si) 0.55%, chromium (Cr) 1.30%, molybdenum (Mo) 1.1%, nickel (Ni) 0.60%, vanadium (V) 0.30%, sulfur (S) 0.032%, phosphorus (P) 0.032%, the balance is iron; then the raw materials are mixed and heated to 950-1250°C, and then melted Pour the molten metal into the sand shell prepared in step (2);

[0028] (4) After the pouring is completed,...

Embodiment 3

[0030] (1) First, mix the Bonnie No. 2 thermosetting resin with quartz sand to obtain the sand material for preparing the brake disc sand shell. The use amount of Bonnie No. 2 thermosetting resin is 1.5% of the weight of the quartz sand;

[0031] (2) Then put the sand prepared in step (1) into the sand machine, heat the sand to 140-145°C, and then blast the sand under a pressure of 4.5 atmospheres to obtain sand with a brake disc cavity Shell, sand shell is naturally cooled for use, the thickness of sand shell is 35mm;

[0032] (3) Prepare the raw materials for the brake disc according to the following weight percentages: carbon (C) 0.20%, manganese (Mn) 0.65%, silicon (Si) 0.45%, chromium (Cr) 1.20%, molybdenum (Mo) 1.0%, nickel (Ni) 0.65%, vanadium (V) 0.30%, sulfur (S) 0.030%, phosphorus (P) 0.030%, the balance is iron; then the raw materials are mixed and heated to 950-1250°C and then melted Pour the molten metal into the sand shell prepared in step (2);

[0033] (4) After the ...

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Abstract

The invention discloses a manufacturing method of a brake disc. The manufacturing method includes: mixing Bonnie 2 thermosetting resin with quartz sand to obtain sand aggregate for manufacturing a sand shell of the brake disc, wherein consumption of the Bonnie 2 thermosetting resin accounts for 1.5-2% of weight of the quartz sand; placing the sand aggregate in a sand shooter to manufacture the sand shell; heating and melting raw materials of the brake disc to 950-1250 DEG C, and pouring molten metal liquid into the sand shell; 0.5-2 h after pouring is completed, enabling pyrolysis volatilization of the Bonnie 2 thermosetting resin in the sand shell, and enabling the quartz sand to scatter from the surface of condensed metal to obtain the brake disc. The manufacturing method has the advantages of being clean in sand scattering, needless of manual sanding and low in production cost.

Description

Technical field [0001] The invention relates to the technical field of brake disc casting, in particular to a method for preparing brake discs. Background technique [0002] The brake disc is a very critical component in a motor vehicle, and its quality directly affects the braking performance and the safety performance of the vehicle, especially the super large brake disc used on the train, the quality of which is more critical. Brake disc, as attached figure 1 Shown: generally includes a fan-shaped brake disc main body, the main body is provided with a plurality of mutually parallel fins along the radial direction, and the main body is provided with connecting holes on the inner side. Due to the special structure of the brake disc, the traditional forging method cannot be realized. At present, the casting method is mostly used, that is, the specific process is as follows: 1) Production process preparation, according to the parts drawing to be produced, production batch and del...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/22B22C9/02B22C1/22
CPCB22C1/22B22C9/02B22C9/22
Inventor 任国良胡美华马先民
Owner 宁波铭汇金属科技有限公司
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