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Full-mold casting plane plate evanescent mode and preparation method thereof

A technology of full mold casting and flat plate, which is applied in the field of lost foam, can solve the problems such as the great influence of casting carbon deposits, and achieve the effects of increasing yield, improving bonding strength, and reducing production costs

Pending Publication Date: 2022-04-29
WUHU GUANFENG MOLD PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of lost foam of solid casting planar plate and its preparation method, to solve the problem that the existing lost form plate production raw material proposed in the above background technology is mostly EPS, with a carbon content of 92%. Issues with large carbon impacts

Method used

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  • Full-mold casting plane plate evanescent mode and preparation method thereof
  • Full-mold casting plane plate evanescent mode and preparation method thereof

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preparation example Construction

[0027] A method for preparing the lost foam of a full-type casting plane plate, the specific steps of the preparation method of the lost foam of a full-type casting plane plate are as follows:

[0028] S1: Bead selection: Select the raw material particles of the lost foam of the full-type casting plate, and weigh the HOOCC(CH3)2CH2CH3 polymer particles according to the amount of the lost foam of the full-type casting plate. The surface of the HOOCC(CH3)2CH2CH3 polymer particles is smooth and the density is uniform. ;

[0029] S2: Pre-foaming: Heat the HOOCC(CH3)2CH2CH3 polymer particles weighed in step S1 to melt at 80-100 degrees Celsius, press inert gas into the molten polymer under pressure, reduce the pressure, and increase the temperature , so that the dissolved gas is released and expanded to pre-foam to obtain a pre-foamed material;

[0030] The pressure under pressurized conditions is 1.5-1.7MPa, after reducing the pressure, the pressure is 1.0-1.2MPa, and the pre-foa...

Embodiment 1

[0039] The specific steps of the preparation method of the lost foam of the solid mold casting plane plate are as follows:

[0040] S1: Bead selection: Select the raw material particles of the lost foam of the full-type casting plate, and weigh the HOOCC(CH3)2CH2CH3 polymer particles according to the amount of the lost foam of the full-type casting plate. The surface of the HOOCC(CH3)2CH2CH3 polymer particles is smooth and the density is uniform. ;

[0041] S2: Pre-foaming: Heat the HOOCC(CH3)2CH2CH3 polymer particles weighed in step S1 to melt at 80-100 degrees Celsius, press inert gas into the molten polymer under pressure, reduce the pressure, and increase the temperature , so that the dissolved gas is released and expanded to pre-foam to obtain a pre-foamed material;

[0042] The pressure under pressurized conditions is 1.5MPa, after reducing the pressure, the pressure is 1.0MPa, and the pre-foaming time is 40min;

[0043] The pre-foamed material is heated to 150 degrees...

Embodiment 2

[0051] The specific steps of the preparation method of the lost foam of the solid mold casting plane plate are as follows:

[0052]S1: Bead selection: Select the raw material particles of the lost foam of the full-type casting plate, and weigh the HOOCC(CH3)2CH2CH3 polymer particles according to the amount of the lost foam of the full-type casting plate. The surface of the HOOCC(CH3)2CH2CH3 polymer particles is smooth and the density is uniform. ;

[0053] S2: Pre-foaming: Heat the HOOCC(CH3)2CH2CH3 polymer particles weighed in step S1 to melt at 80-100 degrees Celsius, press inert gas into the molten polymer under pressure, reduce the pressure, and increase the temperature , so that the dissolved gas is released and expanded to pre-foam to obtain a pre-foamed material;

[0054] The pressure under pressurized conditions is 1.6MPa, after reducing the pressure, the pressure is 1.1MPa, and the pre-foaming time is 35min;

[0055] The pre-foamed material is heated to 125 degrees ...

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Abstract

The invention belongs to the technical field of evanescent modes, and particularly relates to a full-mold casting plane plate evanescent mode, and the large-size full-mold casting plane plate evanescent mode adopts a HOOCC (CH3) 2CH2CH3 polymer as a raw material. The preparation method of the large-size full-mold casting plane plate evanescent mold comprises the following specific steps: S1, selecting beads; s2, pre-foaming is carried out; s3, performing curing; s4, compression molding; s5, cooling; s6, demolding is conducted; s7, board drying; and S8, the plate is detected and trimmed. The method comprises the process steps of particle selection, pre-foaming, curing, compression molding, cooling, demolding, plate drying and the like. According to the scheme, the defects of carbon deposition and the like on the surfaces of the cast ductile iron and steel castings can be fundamentally overcome. By means of the manufacturing method, deformation of the manufactured lost foam pattern can be prevented, the bonding strength between the beads is improved, sufficient fusion of the beads is guaranteed, the yield of castings is greatly increased, and the comprehensive production cost of the castings is further reduced.

Description

technical field [0001] The invention relates to the technical field of lost foam, in particular to a lost foam of solid mold casting plane plate and a preparation method thereof. Background technique [0002] Lost foam casting (also known as solid casting) is to bond and combine paraffin or foam models similar in size and shape to castings to form a model cluster. After brushing refractory paint and drying, it is buried in dry quartz sand for vibration molding. Down pouring, the model is vaporized, the liquid metal occupies the position of the model, solidified and cooled to form a new casting method. [0003] Most of the raw materials for the production of existing disappearing template materials are EPS, with a carbon content of 92%, which has a great impact on casting carbon deposits. Contents of the invention [0004] The object of the present invention is to provide a kind of lost foam of solid casting planar plate and its preparation method, to solve the problem tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/02B29C44/02B29C43/02B22C9/04
CPCB29C69/02B29C44/02B29C43/02B22C9/04
Inventor 赵智怡陈雁仲晓东汪爱霞汤荣芳
Owner WUHU GUANFENG MOLD PLASTICS CO LTD
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