Unlock instant, AI-driven research and patent intelligence for your innovation.

Vacuum pressure alumetizing channel and isolation device and preparation method thereof

A technology of vacuum pressure and isolation device, applied in the field of vacuum pressure aluminizing channel and isolation device, can solve the problems of affecting the physical properties of aluminum silicon carbide composite materials, being easy to fall off from steel plates or molds, and being volatile, and achieving low cost, Easy operation, wide application effect

Active Publication Date: 2013-06-19
HUNAN HANGTIAN CHENGYUAN PRECISION MACHINERY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The release agent in the known aluminum alloy process prepared by liquid extrusion die forging, the organic release agent is easy to volatilize above 300 ° C, and there is residual carbon in a vacuum state; in another release agent made of water glass and zinc oxide, In the coated steel plate or mold, zinc oxide is easy to fall off from the steel plate or mold, enter the liquid aluminum alloy, and easily affect the physical properties of the vacuum pressure infiltrated aluminum silicon carbide composite material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vacuum pressure alumetizing channel and isolation device and preparation method thereof
  • Vacuum pressure alumetizing channel and isolation device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Vacuum pressure aluminizing channel and isolation device: corrugations or grooves 2 suitable for the flow of aluminum liquid are provided on both sides of the steel plate or stainless steel plate 1, and the peak height of the corrugations or grooves is 0.5 mm to 2.0 mm; Corrugated or grooved steel or stainless steel plates are uniformly covered with a layer of sodium silicate film 3 on both sides.

[0029] Preparation method of vacuum pressure aluminized channel and isolation device:

[0030] The size of the silicon carbide skeleton in this embodiment is 130×140×5 mm, and three pieces are installed in one mold.

[0031] (1) Press the steel plate into a corrugated plate with a corrugation height (or peak corrugation) of 1.9mm;

[0032] (2) Cut the corrugated steel plate into a square corrugated plate 1.2mm larger than the silicon carbide skeleton 130×140, that is, 131.2×141.2;

[0033] (3) Wash the cut steel corrugated plate with 10% sodium carbonate aqueous solution f...

Embodiment 2

[0040] The size of the aluminum silicon carbide composite silicon carbide skeleton is 190×140×5mm, and there are 3 pieces in one mold.

[0041] (1) Press the steel plate into a corrugated plate, the corrugated height is 1.0mm; the corrugated width is not limited;

[0042] (2) Cut the corrugated steel plate into a square plate 1.8mm larger than the silicon carbide skeleton 190×140mm, that is, 191.8×141.8mm;

[0043] (3) Wash the cut steel corrugated plate with 15% sodium carbonate aqueous solution, then put the steel corrugated plate into the vibration mill, add 15% sodium carbonate aqueous solution or an appropriate amount of alumina grinding balls, and vibrate for 20 minutes ;

[0044] (4) Soak the corrugated steel plate with 40% sulfuric acid aqueous solution for 60 minutes, then rinse it with running water, blow off the water stain with high-pressure gas, and set it aside;

[0045] (5) Evenly coat the water glass aqueous solution with a concentration of 20% by weight on t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heightaaaaaaaaaa
thicknessaaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

The invention relates to a vacuum pressure alumetizing channel and isolation device and a processing method thereof. Ripple or grooves suitable for flow of aluminum liquid are formed on two sides of a steel plate or a stainless steel plate; the height of the ripple or the grooves is 0.5 to 2.0 mm; and one layer of sodium silicate film is uniformly covered on the two sides of the steel plate or the stainless steel plate with the ripple or the grooves. A graphite plate is replaced by a corrugated plate or a grooved plate made of steel or stainless steel, so that a channel for aluminum liquid toflow is formed; an aqueous solution of water glass is coated on two sides of the corrugated plate or the grooved plate uniformly; after being heated, the aqueous solution of water glass forms a sodium silicate film; a test proves that in the alumetizing channel and isolation device, aluminum alloy in holes of a silicon carbide skeleton is full, the gas tightness can reach (3.5-4)*10<-9> Pa.m<3> / s, and an aluminum silicon carbide composite material can be separated easily when a workpiece is disassembled. By the vacuum pressure alumetizing channel and isolation device and the processing methodthereof, the process is simple, and convenient to operate; cost is low; application range is wide; and industrialized production can be realized.

Description

technical field [0001] The invention relates to a vacuum pressure aluminized channel and isolation device and a processing method thereof. Background technique [0002] Vacuum pressure infiltration process is used to prepare aluminum-silicon carbide composite materials. The silicon carbide porous material skeleton is prepared first, and then several pieces of silicon carbide porous skeleton are stacked together with the aluminized channel and isolation device, and loaded into the aluminized mold. When aluminum alloy is infiltrated under vacuum pressure, the existing technology is to use graphite as the channel and isolate the porous skeleton of silicon carbide, but graphite is hard and brittle, which is difficult to disassemble, and sometimes damages the shape of the aluminum-silicon carbide composite workpiece; there are also steel plates used as the channel and isolation Silicon carbide porous skeleton, but the steel plate has a certain toughness and can be cracked during ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/12C22C101/14
Inventor 舒阳会海春英秦国超胡娟李彬刘韵妍万绍平胡盛青
Owner HUNAN HANGTIAN CHENGYUAN PRECISION MACHINERY