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Coating method

A coating and coating technology, applied in the field of coating, can solve problems such as insufficient wheel quality, and achieve the effects of improving directional solidification, improving the adhesion of coating films, and improving cold insulation.

Active Publication Date: 2012-12-05
ASAHI TEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the quality of vehicle wheels is insufficient in conventional coating methods, and a coating method capable of producing higher-quality products is required

Method used

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Embodiment

[0061] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.

[0062] 1. Upper mold

[0063] 1-1. Primer coating process, formal coating process

[0064] Before casting, the upper mold 40 of the low-pressure casting apparatus D for vehicle wheels is molded. First, a primer is applied to the side gate facing region 42 (with a width La of 100 to 140 mm) of the upper mold 40 . At this time, the surface temperature of the upper mold 40 is set at 200 to 250°C. The heat-retaining coating agent of the primer coating type is diluted 10 times with pure water and used.

[0065] Next, the rim portion forming portion 41 and the lower surface 44 of the upper mold 40 were subjected to main molding. At this time, the surface temperature of the upper mold 40 is set at 200 to 250°C. The heat-retaining coating agent of the primer coating type is diluted 3 times with pure water and used.

[0066] 1...

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PUM

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Abstract

The invention discloses a coating method to provide improvement and stability of the quality of vehicle-used wheel products. The coating method comprises: a bottom coating step of performing bottom coating on a side-gate facing area (42) of a rim generation part (41) of an upper die (40) facing a side gate (11); and then, a formal coating step of performing formal coating on the rim generation part (41) and a lower surface (44). Further, coating method comprises: a bottom coating step of performing bottom coating on a side-gate periphery area (36) of a rim generation part (35) of a transverse die (30); and then, a formal coating step of performing formal coating on the rim generation part (35) of a transverse die (30).

Description

technical field [0001] The present invention relates to a method of coating a mold for casting vehicle wheels. Background technique [0002] As a casting device for vehicle wheels and the like, a so-called side gate type low pressure casting device is known (for example, Patent Document 1). A mold used in this low-pressure casting device is constituted by combining an upper mold and a lower mold, and a pair of transverse molds sandwiching the upper mold and the lower mold from the side. Furthermore, runners for feeding molten metal into the mold are provided on the parting surfaces of the pair of transverse molds, and the molten metal is injected into the mold from both sides of the mold through the runners. That is, in a low-pressure casting device, molten metal is filled into a cavity at a low speed to cast products such as vehicle wheels. [0003] When casting an aluminum alloy or the like using a low-pressure casting apparatus, a mold coating is performed by applying a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C23/02B22C3/00B22D18/04
CPCB22C3/00B22C9/28B22D18/04
Inventor 川岛志郎铃木悟
Owner ASAHI TEC CORP