CN1060221C - Potassium titanate fabric reinforced zinc-aluminium alloy composite material and its mfg. method - Google Patents
Potassium titanate fabric reinforced zinc-aluminium alloy composite material and its mfg. method Download PDFInfo
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- CN1060221C CN1060221C CN98113701A CN98113701A CN1060221C CN 1060221 C CN1060221 C CN 1060221C CN 98113701 A CN98113701 A CN 98113701A CN 98113701 A CN98113701 A CN 98113701A CN 1060221 C CN1060221 C CN 1060221C
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- potassium titanate
- zinc
- aluminium alloy
- crystal whisker
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Abstract
The present invention relates to a metal matrix composite material, particularly to an improvement of the components of a zinc-aluminium alloy and a preparation process of the zinc-aluminium alloy, which is applied to the technical fields of bearing supports, worm gears, worm screws, etc. The present invention is characterized in that potassium titanate whiskers account for 20 to 30% of the volume of the metal matrix composite material, and the rest is a zinc-aluminium alloy. The present invention aims to further increase the abrasion resistance of the zinc-aluminium alloy, lower the thermal expansion coefficient, reduce the phenomenon of high-temperature creep and widen the service temperature range of the zinc-aluminium alloy. Compared with the zinc-aluminium alloy, the specific gravity of the metal matrix composite material is reduced by about 10%, so the weight of a machine component is reduced.
Description
The invention belongs to a kind of metal-base composites, particularly relate to a kind of at the improvement of aluminium zinc performance and its process manufacturing technology.
At present, aluminium zinc is widely used in fields such as the support of bearing, turbine, scroll bar, slide block, mold manufacturing industry as important antifriction material and moulding stock, it has characteristics such as alloy melting point is low, preparation technology is simple, but it exists a lot of not enough simultaneously: 1, wear-resisting hard point is few in the aluminium zinc tissue, and its wear resisting property remains further to be improved; 2, the aluminium zinc thermal expansivity is big, and high temperature creep is serious; 3, resistance to elevated temperatures is poor, can only use under less than 80 ℃ condition at Working environment, does not satisfy the working condition requirement of present reality.
At problem set forth above, the objective of the invention is to further improve the wear resistance of aluminium zinc, reduce its thermal expansivity, minimizing high temperature is coiled to cash and is resembled, and improves the use temperature scope of aluminium zinc.
The present invention is achieved through the following technical solutions:
The matrix material of potassium titanate fabric reinforced zinc-aluminium alloy, potassium titanate crystal whisker account for the 20-30% of the matrix material volume integral number of acquisition, and surplus is an aluminium zinc.
The molecular formula of described potassium titanate crystal whisker is K
2OnTiO
2, n=4 wherein, 6 or 8.
The military K of the molecule of potassium titanate crystal whisker
2OnTiO
2In, best n=4 or 6.
Fast aluminium zinc (ZAC) trade mark have three kinds, be respectively: the component of (with weight ratio) aluminium zinc (ZAC1) is: Al 10.5-12 Cu 0.8-1.2 Mg0.01-0.03Zn is a surplus; The component of aluminium zinc (ZAC2) is: Al 20-23 Cu 0.5-1.5 Mg 0.01-0.03 Zn is a surplus; The component of aluminium zinc (ZAC3) is: Al 25-28 Cu 1.7-2.8 Mg 0.01-0.03 Zn is a surplus.
The manufacture method of potassium titanate fabric reinforced zinc-aluminium alloy composite material is characterized in that this method carries out with the following step: earlier with the potassium titanate crystal whisker pre-treatment, whisker stirs (1), removes potassium titanate crystal whisker surface free K
+Ion; (2) potassium titanate crystal whisker is filtered out moisture, put into the mould extrusion molding, make prefabricated section; (3) potassium titanate crystal whisker being carried out oven drying at low temperature and high temperature sintering handles; (4) liquid Zn aluminium alloy (ZAC) and potassium titanate crystal whisker prefabricated section are pushed composite molding.
The manufacture method of fast potassium titanate fabric reinforced zinc-aluminium alloy composite material, in the potassium titanate crystal whisker pre-treatment, whisker put into be tart water and stir.
The temperature of oven drying at low temperature is incubated 4 hours at 50-60 ℃ in the step (3); The pyroprocessing temperature is incubated 2 hours at 780-800 ℃;
Optimal processing parameter is in step (4): the prefabricated crystal whisker block preheating temperature is at 700-750 ℃, and mold preheating temperature 300-400 ℃, 650-750 ℃ of alloy teeming temperature, squeeze pressure 20-100MPa, extrusion speed 10mm/s, dwell time 3min.
Advantage of the present invention is that the wear resisting property of this matrix material improves 4-5 doubly than aluminium zinc, and thermal expansivity reduces about 20% in 25-200 ℃ of temperature range, and use temperature is brought up to 150 ℃ from original 80 ℃, and high temperature creep obviously reduces.In addition, the proportion of this matrix material reduces about 10% than aluminium zinc, has alleviated the weight of machine parts.Though the manufacturing cost of matrix material is higher by 50% than aluminium zinc, consider performance and price ratio relation, use the overall economic efficiency of matrix material can improve 2-3 doubly.
Accompanying drawing 1 is a process flow sheet of the present invention.
The present invention is specified by embodiment below in conjunction with accompanying drawing: 1, potassium titanate crystal whisker pre-treatment: potassium titanate crystal whisker is put into water, whisker is fully stirred, adding entry rainwater in puddles long-pending ratio 2-3%HCl (concentration is 10%), remove potassium titanate crystal whisker surface free K
+Ion.2, potassium titanate crystal whisker prefabricated section preparation technology: pretreated potassium titanate crystal whisker is filtered out unnecessary moisture content, apply certain pressure and make the prefabricated section moulding.In type prefabricated crystal whisker block is taken out from mould, carry out subzero treatment earlier, temperature is 50-60 ℃, is incubated 4 hours and dries, and is carrying out the high temperature sintering processing then, and temperature is 780-800 ℃, is incubated 2 hours, cools to room temperature then with the furnace.3, the Chemical Composition scope of aluminium zinc:
According to different service requirementss, three kinds of alloy ingredient scopes are arranged: the preparation technology of Al Cu Mg ZnZAC1 10.5-12.5 0.8-1.2 0.01-0.03 surplus ZAC2 20-23 0.5-1.5 0.01-0.03 surplus ZAC3 25-28 1.7-2.8 0.01-0.02 surplus 4. potassium titanate fabric reinforced zinc-aluminium alloy composite materials:
Preparation process is seen Fig. 1-1, finds through experiment: the molecular formula of fast potassium titanate crystal whisker be: K
2OnTiO
2, n=4 wherein, 6 or 8, work as n=4,6 o'clock, performance the best.
Optimal processing parameter is: 700-750 ℃ of prefabricated crystal whisker block temperature
Mold preheating temperature 300-400 ℃
650-750 ℃ of alloy teeming temperature
Extrusion speed 10mm/s
Dwell time 3min.
The matrix material whisker that obtains is evenly distributed whisker volume fraction 20-30% in matrix.
Claims (8)
1, the matrix material of potassium titanate fabric reinforced zinc-aluminium alloy is characterized in that: potassium titanate crystal whisker accounts for the 20-30% of the matrix material volume integral number of acquisition, and surplus is an aluminium zinc.
2, the matrix material of potassium titanate fabric reinforced zinc-aluminium alloy according to claim 1 is characterized in that: the molecular formula of described potassium titanate crystal whisker is K2OnTiO2, n=4 wherein, 6 or 8.
3, the matrix material of potassium titanate fabric reinforced zinc-aluminium alloy according to claim 2 is characterized in that: among the molecular formula K2OnTiO2 of potassium titanate crystal whisker, and n=4 or 6.
4, the matrix material of potassium titanate fabric reinforced zinc-aluminium alloy according to claim 1 is characterized in that: the described aluminium zinc trade mark has three kinds, is respectively: (with weight ratio)
The component of a aluminium zinc is: Al10.5-12 Cu0.8-1.2 Mg0.01-0.03 Zn is a surplus;
The component of b aluminium zinc is: Al20-23 Cu0.5-1.5 Mg0.01-0.03 Zn is a surplus;
The component of c aluminium zinc is: Al25-28 Cu1.7-2.8 Mg0.01-0.03 Zn is a surplus.
5, the manufacture method of potassium titanate fabric reinforced zinc-aluminium alloy composite material is characterized in that this is below method
The row step is carried out: a, elder generation are with the potassium titanate crystal whisker pre-treatment, and whisker stirs, and remove potassium titanate crystal whisker surface free K+ ion; B, potassium titanate crystal whisker is filtered out moisture, put into the mould extrusion molding, make prefabricated section; C, potassium titanate crystal whisker is carried out oven drying at low temperature and high temperature sintering handle; D, liquid Zn aluminium alloy and potassium titanate crystal whisker prefabricated section are pushed composite molding.
6, the manufacture method of potassium titanate fabric reinforced zinc-aluminium alloy composite material according to claim 5,
It is characterized in that: in the potassium titanate crystal whisker pre-treatment, whisker put into be tart water and stir
Mix.
7, the manufacture method of potassium titanate fabric reinforced zinc-aluminium alloy composite material according to claim 5,
It is characterized in that: in the step (3) temperature of oven drying at low temperature at 50-60 ℃, be incubated 4 little
The time: the high temperature sintering treatment temp is incubated 2 hours at 780-800 ℃;
8, the manufacture method of potassium titanate fabric reinforced zinc-aluminium alloy composite material according to claim 5,
It is characterized in that: processing parameter is in step (4): the prefabricated crystal whisker block preheating temperature 700～
750 ℃, 300～400 ℃ of mold preheating temperatures, 650～750 ℃ of alloy teeming temperatures, squeeze pressure
20-100MPa, extrusion speed 10mm/s, dwell time 3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113701A CN1060221C (en) | 1998-01-04 | 1998-01-04 | Potassium titanate fabric reinforced zinc-aluminium alloy composite material and its mfg. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113701A CN1060221C (en) | 1998-01-04 | 1998-01-04 | Potassium titanate fabric reinforced zinc-aluminium alloy composite material and its mfg. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1197121A CN1197121A (en) | 1998-10-28 |
| CN1060221C true CN1060221C (en) | 2001-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113701A Expired - Fee Related CN1060221C (en) | 1998-01-04 | 1998-01-04 | Potassium titanate fabric reinforced zinc-aluminium alloy composite material and its mfg. method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051555A (en) * | 2011-01-14 | 2011-05-11 | 南京信息工程大学 | Heat-resistant aluminium alloy material and preparation method thereof |
| CN102051556B (en) * | 2011-01-14 | 2012-08-22 | 南京信息工程大学 | Preparation method of wear-resistant aluminium alloy material |
| CN105964985A (en) * | 2016-05-23 | 2016-09-28 | 安徽鑫宏机械有限公司 | Wear-resistant hammer head of potassium titanate whisker-enhanced casting-penetration composite mining crusher and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372039A (en) * | 1989-08-11 | 1991-03-27 | Isolite Kogyo Kk | Aluminum-base composite material and its manufacture |
| JPH08109423A (en) * | 1994-10-11 | 1996-04-30 | Furukawa Electric Co Ltd:The | Production of fiber reinforced aluminum composite |
-
1998
- 1998-01-04 CN CN98113701A patent/CN1060221C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372039A (en) * | 1989-08-11 | 1991-03-27 | Isolite Kogyo Kk | Aluminum-base composite material and its manufacture |
| JPH08109423A (en) * | 1994-10-11 | 1996-04-30 | Furukawa Electric Co Ltd:The | Production of fiber reinforced aluminum composite |
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| Publication number | Publication date |
|---|---|
| CN1197121A (en) | 1998-10-28 |
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