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Ferro-phosphorus aluminum borate whisker preform manufacturing method

A technology of aluminum borate whiskers and a manufacturing method, applied in crystal growth, chemical instruments and methods, self-solids and other directions, can solve problems such as poor performance, complex manufacturing process, poor controllability, etc., and achieve stable and mature technology, simple manufacturing process, The effect of low manufacturing cost

Active Publication Date: 2017-05-24
BINZHOU BOHAI PISTON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing manufacturing method of aluminum borate whiskers is complicated in the manufacturing process, difficult to operate, difficult to control, unable to establish a standardized manufacturing process and high in manufacturing cost
For example, the sintering method uses nickel oxide in the ingredients, which requires high particle size and purity of nickel oxide. At present, this type of nickel oxide cannot be produced in China and needs to be imported, resulting in high cost and difficult to form mass production.
Another example is the high-temperature flux method. The aluminum borate whiskers prepared by this method use many types of raw materials, complex proportioning processes, and poor controllability. The whiskers produced are small in size, low in length and diameter, and unevenly distributed. Poor post-performance, which affects practical applications and cannot be mass-produced

Method used

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  • Ferro-phosphorus aluminum borate whisker preform manufacturing method
  • Ferro-phosphorus aluminum borate whisker preform manufacturing method

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preparation example Construction

[0023] The preparation method of the aluminum borate whisker preform of the present invention comprises the following steps:

[0024] Step 1: Raw material processing. The raw materials used in this method are aluminum hydroxide, boric acid, and iron phosphorus, wherein aluminum hydroxide accounts for 69% to 90% of the total weight, boric acid accounts for 7% to 28% of the total weight, and iron phosphorus accounts for 0.5% to 3% of the total weight. %, the three were ground to 200-500 mesh respectively, then mixed evenly with a mixer, put into a crucible and calcined at 500-1000°C for 3 hours to remove the moisture in the material, and then ball milled through a 200-mesh sieve.

[0025] Step 2: Press molding of the prefabricated body blank. According to the required whisker preform size, shape, volume fraction, etc., determine the process parameters such as material weight and pressing pressure, and put the processed material into the mold, see figure 1 , using a four-column...

Embodiment 1

[0029] The preparation method of the aluminum borate whisker preform (taking the MC07 preform as an example) of the present invention comprises the following steps:

[0030] Step 1: Grind aluminum hydroxide accounting for 85% of the total weight, boric acid accounting for 13% of the total weight, and ferrophosphorus accounting for 2% of the total weight to 200-500 mesh respectively, put them into a mixer, and use 1300 rpm After mixing for 10 minutes, put it into a silicon carbide crucible, calcine in a calcination furnace at a constant temperature of 550°C for 3 hours, and then ball mill it through a 200-mesh sieve.

[0031] Step 2: Connect the mold to the press with bolts, set the pressure of the press to 8MPa, and adjust the upper and lower cylinder stoppers to a suitable position. After the mixed raw materials are calcined, the sieved powder is weighed and put into the mold cavity 4. The volume of the finished MC07 preform is 150 cubic centimeters, the volume fraction is 18...

Embodiment 2

[0035] The preparation method of the aluminum borate whisker preform of the present invention comprises the following steps:

[0036] Step 1: Raw material processing. The raw material used in this method is aluminum hydroxide, boric acid, ferrophosphorus, wherein aluminum hydroxide accounts for 69% of the total weight, boric acid accounts for 28% of the total weight, and ferrophosphorus accounts for 3% of the total weight, and the three are respectively ground to 200- 500 mesh, and then use a mixer to mix evenly, put it into a crucible and calcinate at a temperature of 1000°C for 3 hours to remove the moisture in the material, and then ball mill it through a 200 mesh sieve.

[0037] Step 2: Press molding of the prefabricated body blank. According to the required whisker preform size, shape, volume fraction, etc., determine the process parameters such as material weight and pressing pressure, and put the processed material into the mold, see figure 1 , using a four-column pre...

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Abstract

Ferro-phosphorus aluminum borate whisker preform manufacturing method of the invention comprises the following steps of 1, processing raw material: adopting, by weight, 69-90 parts of aluminium hydroxide, 7-28 parts of boric acid , 0.5-3 parts of ferro-phosphorus, grinding the three materials into fine powder, mixing evenly by using a blender mixer, putting the mixture into a crucible and removing water in the material; 2, pressing and molding a preform blank: according to size, shape and volume fraction of the required whisker preform, determining all press parameters including feed-weight and pressing pressure, putting the processed material into a mould, and pressing and molding the preform blank by using a press machine; 3, sintering at high temperature the preform blank; 4, processing and forming the preform: according to the shape and size of the required whisker preform, turning and processing the preform to a finished product by using a numerical control machine tool. The ferro-phosphorus aluminum borate whisker preform manufacturing method is capable of achieving automation of the aluminum borate whisker preform, and is low in cost, simple in operation, high in production efficiency, and can be applied to pistons, and therefore the cost is reduced.

Description

technical field [0001] The invention belongs to the field of piston preparation, and relates to a method for manufacturing an aluminum phosphate iron borate whisker preform. Background technique [0002] Aluminum borate whisker is a new type of ceramic fiber material that grows in the form of single crystal under artificial control conditions, has light weight, high strength, high temperature resistance and corrosion resistance, and has good thermal insulation and electrical insulation properties. Aluminum borate whiskers are widely used, and can be used in automobile, aerospace, medical and other manufacturing fields after compounding with aluminum alloy and zinc alloy. The aluminum matrix composite materials and zinc alloy composite materials prepared with it have excellent performance and have great application prospects. [0003] The application of aluminum borate whisker aluminum-based composite materials to the key parts of the piston can greatly improve the performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/10C30B29/62C30B1/10C22C49/14C22C101/08
CPCC22C49/14C30B1/10C30B29/10C30B29/62
Inventor 张国华孟现长俎训龙冯增建徐云庆王延军崔岩寿李艳军李佳王华超李建兴
Owner BINZHOU BOHAI PISTON CO LTD
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