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Green sand device for bench vice channel steel and forming method thereof

A technology of green sand and bench vise, which is applied in the direction of casting mold composition, casting molding equipment, casting mold, etc., can solve problems such as iron penetration defects, achieve the effect of reducing storage costs, reducing processing costs, and improving the working environment

Pending Publication Date: 2021-10-22
LAIZHOU HONGYUAN BENCH VICE MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims at the problem of iron penetration defects caused by sand core casting in the prior art, and provides a green sand device and molding method for bench vise channel steel

Method used

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  • Green sand device for bench vice channel steel and forming method thereof
  • Green sand device for bench vice channel steel and forming method thereof
  • Green sand device for bench vice channel steel and forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Please refer to Figure 1 to Figure 3 , a green sand device for bench vise channel steel, comprising a workbench 1, a loose block 4 and a channel steel 5, the lower end of the workbench 1 is provided with a support frame, and the end of the workbench 1 is provided with Locating pin 2, can guarantee the support effect to channel steel 5, conveniently takes and puts loose block 4, and the bottom of described channel steel 5 and loose block 4 is respectively provided with corresponding positioning hole one 7 and positioning hole two 9, channel steel 5 and the movable block 4 are placed on the workbench 1, the positioning pin 2 is sequentially inserted into the positioning hole 7 and the positioning hole 2 9 from bottom to top, and the channel steel 5 is provided with a housing for the movable block 4 The U-shaped groove, the U-shaped groove is provided with a sand tire 6 made of green sand, and the contact between the movable block 4 and the sand tire 6 is provided with a ...

Embodiment 2

[0042] Please refer to Figure 4 to Figure 5 , is different from Embodiment 1 in that it also includes a sand scraping plate 10 for the sand scraping tire 6, and the rest is the same as Embodiment 1.

[0043] A green sand device for bench vise channel steel, further comprising a sand scraper 10, a groove 10-1 is provided on the sand scraper 10, and empty knives are arranged on both sides of the groove 10-1 Groove 10-2, the empty knife groove 10-2 is inserted on the outer wall of the U-shaped groove. After the green sand is extruded, the sand scraping plate 10 is clamped on the outside of the U-shaped groove, and the sand scraping plate 10 is manually pushed to move along the length direction of the channel steel 5, thereby scraping off excess loose sand on the sand tire 6, Simultaneously, the groove 10-1 structure on the sand scraping plate 10 ensures that the height of the upper end of the sand tire 6 is slightly higher than the height of the U-shaped groove sidewall.

[00...

Embodiment 3

[0046] The present invention also discloses a method for forming green sand, which adopts the above-mentioned green sand device and includes the following steps:

[0047] Mix molding sand and water evenly to form green molding sand, the humidity of the green molding sand is 2.9%-3.2%, and the compaction rate is 35%-40%. When the humidity is lower than 2.9%, the molding sand is not fully wetted, it is difficult to remove the mold, the sand mold is fragile, and the casting is prone to sand holes and erosion defects; when the humidity is greater than 3.2%, it is easy to cause pinholes, pores and stickiness in the casting Sand and other defects, the humidity is preferably 3%, and the compaction rate is preferably 38%.

[0048] The channel steel 5 and the movable block 4 are sequentially inserted on the positioning pin 2 of the workbench 1, that is, the first positioning hole 7 and the second positioning hole 9 are sleeved on the positioning pin 2, and the movable block 4 is placed o...

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Abstract

The invention relates to a green sand device for bench vice channel steel and a forming method thereof. The green sand device comprises a workbench, a movable block and the channel steel, a positioning pin is arranged on the workbench, a first positioning hole and a second positioning hole are correspondingly formed in the bottom of the channel steel and the bottom of the movable block respectively, the positioning pin is sequentially inserted into the first positioning hole and the second positioning hole from bottom to top, a U-shaped groove for containing the movable block is formed in the channel steel, a sand tire made of green sand is arranged in the U-shaped groove, and a protrusion is arranged at the contact position of the movable block and the sand tire. The sand tire is made of the green sand, so that the channel steel and the sand tire form a whole, zero-clearance fit is achieved, the problem of iron seepage caused by molten iron leakage during casting of the bench vice channel steel is solved, and the product quality is improved; the working procedures of independently manufacturing and curing a resin sand core are reduced, and the processing cost is reduced; and meanwhile, the original resin sand core is replaced by the green sand, triethylamine curing is not needed, so that environmental pollution is avoided, and the working environment of workers is improved.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a green sand device for channel steel in a bench vise and a molding method thereof. Background technique [0002] Existing channel steel table vise casting process: 1. Manufacture resin sand cores with sand core molds, inject triethylamine into the resin sand cores to solidify; 2. Take them out after curing for a period of time, trim the sand cores, and store them for casting Use; 3. When using, place the sand core in the groove of the channel steel, pour molten iron, keep it warm for a period of time, and then cool it. After cooling, take the casting out for sand cleaning. Since there are dimensional tolerances between the resin sand core and the channel steel groove, when the resin sand core is placed in the channel steel groove, there will inevitably be a gap between the sand core and the channel steel, causing the channel steel to collapse. Iron penetration defects occur dur...

Claims

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Application Information

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IPC IPC(8): B22C15/02B22C13/02B22C9/02B22C9/22
CPCB22C15/02B22C13/02B22C9/02B22C9/22
Inventor 王忠全王树兴单学义候贺涛李炬邑
Owner LAIZHOU HONGYUAN BENCH VICE MFR
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