CN1179919C - Prepn process of sand blasting ceramic nozzle - Google Patents
Prepn process of sand blasting ceramic nozzle Download PDFInfo
- Publication number
- CN1179919C CN1179919C CNB021355991A CN02135599A CN1179919C CN 1179919 C CN1179919 C CN 1179919C CN B021355991 A CNB021355991 A CN B021355991A CN 02135599 A CN02135599 A CN 02135599A CN 1179919 C CN1179919 C CN 1179919C
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- CN
- China
- Prior art keywords
- sintering
- sand jet
- ceramic sand
- ball milling
- ceramic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention relates to the making process of a ceramic sand jet, which comprises the following steps: (W, Ti) C solid solution is added to a B4 C matrix, and a small amount of Si sintering assistant is added to the matrix; B4 C/TiB2 /W2 B5 is generated for making the ceramic sand jet by in-situ chemical reaction between B4C and (W, Ti) C in the process of hot pressed sintering. The B4C base ceramic sand jet made by the process has high compactness. Compared with pure B4 C ceramics, the intensity and the toughness of the ceramic sand jet are greatly enhanced. The sintering temperature of the present invention is decreased below 1900 DEG C from that of the pure B4 C ceramics of 2200 DEG C. In addition, the present invention has great reduction of sintering time, and the erosion and abrasion resistance of the ceramic sand jet is strong.
Description
1. technical field
The invention belongs to the advanced manufacturing technology field, particularly relate to a kind of preparation process of sand blasting ceramic nozzle.The ceramic sand jet of this prepared can be widely used in industries such as surface strengthening, surface cleaning, surface modification, the cutting of abrasive blasting material.
2. background technology
Sand spit requires to have high hardness and wear resistance, and has certain intensity and toughness.At present, the material of making nozzle both at home and abroad has metal, Wimet and pottery etc.The life-span of steel nozzle can not show a candle to carboloy nozzle under the same conditions, and the life-span of carboloy nozzle is not as ceramic nozzle.Pure norbide (B
4C) pottery is owing to have very high hardness and wear resisting property, thereby is the preferred material of preparation ceramic sand jet.But pure B
4The intensity and the fracture toughness property of C ceramic sand jet are low, are easy to take place brittle rupture in application, and reliability is low.And B
4C stupalith densification degree is low, and sintering temperature needs to use the ultrahigh-temperature sintering oven up to 2200 ℃, and sintering time is long, and energy expenditure is big, causes using pure B
4C ceramic nozzle price height.Be badly in need of seeking a kind of new technology for this reason, improve pure B
4The performance of C ceramic sand jet reduces its sintering temperature and manufacturing cost.
3. summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of preparation process of sand blasting ceramic nozzle cheaply is provided.
The present invention realizes in the following manner.
A kind of preparation process of sand blasting ceramic nozzle is characterized in that may further comprise the steps:
(1) presses B
4C40～68%, (mass percent of Si1～5% takes by weighing raw material for W, Ti) C30～55%;
The raw material that (2) will weigh up mixes, and strengthens ball milling then, with ethanol as medium, 100～160 hours ball milling time;
(3) material behind the ball milling is placed drying in the vacuum drying oven, dry back material sieves in the cupboard of nitrogen protection is arranged;
(4) adopt hot-pressing sintering technique, with nitrogen as sintering atmosphere, by means of B in the hot pressed sintering process
4C and (W, Ti) in-situ chemical reaction of C generation B
4C/TiB
2/ W
2B
5And the preparation ceramic sand jet;
Hot-pressing sintering technique parameter in the above-mentioned step of preparation process (4) is: sintering range is 1600～1900 ℃, and pressure is 25～40MPa, and soaking time is 10～40min.
B by above-mentioned prepared
4C base ceramic sand jet densification degree height, its intensity and toughness are than pure B
4The C pottery increases substantially, and sintering temperature is by pure B
42200 ℃ of the C pottery are reduced to below 1900 ℃, and sintering time shortens greatly.Thereby make B
4Energy consumption and cost in the C ceramic nozzle manufacturing processed reduce greatly.The sand blast erosion test-results shows, use the new ceramics sand spit can: improve nozzle life-span, reduce resource consumption, reduce the sandblast cost, reduce labor strength.
4. embodiment:
Provide two most preferred embodiments of the present invention below:
Embodiment one: press B
4C40%, (mass percent of Si3% takes by weighing raw material for W, Ti) C57%.The raw material that weighed up is mixed, strengthens ball milling then, with ethanol as medium, 120 hours ball milling time.Material behind the ball milling is placed drying in the vacuum drying oven, and dry back material sieves in the cupboard of the atmosphere that nitrogen protection is arranged.Adopt hot pressing sintering method to prepare ceramic sand jet, sintering temperature is 1820 ℃, and pressure is 36MPa, and soaking time is 25min, adopts the nitrogen sintering atmosphere.Adopt the B of above-mentioned prepared
4C base ceramic sand jet densification degree height, its intensity and toughness are than pure B
4The C pottery increases substantially, and sintering temperature is by pure B
42200 ℃ of the C pottery are reduced to 1820 ℃, and the sintering time shortening, and the wearing and tearing ability against corrosion of nozzle is good.
Embodiment two: press B
4C58%, (mass percent of Si2% takes by weighing raw material for W, Ti) C40%.The raw material that weighed up is mixed, strengthens ball milling then, with ethanol as medium, 150 hours ball milling time.Material behind the ball milling is placed drying in the vacuum drying oven, and dry back material sieves in the cupboard of the atmosphere that nitrogen protection is arranged.Adopt hot pressing sintering method to prepare ceramic sand jet, sintering temperature is 1850 ℃, and pressure is 36MPa, and soaking time is 30min, adopts the nitrogen sintering atmosphere.Adopt the B of above-mentioned prepared
4C base ceramic sand jet densification degree height, its intensity and toughness are than pure B
4The C pottery increases substantially, and sintering temperature is by pure B
42200 ℃ of the C pottery are reduced to 1850 ℃, and the sintering time shortening, and the wearing and tearing ability against corrosion of nozzle is good.
Claims (1)
1. preparation process of sand blasting ceramic nozzle is characterized in that may further comprise the steps:
(1) presses B
4C 40～68%, and (mass percent of Si1～5% takes by weighing raw material for W, Ti) C30～55%;
The raw material that (2) will weigh up mixes, and strengthens ball milling then, with ethanol as medium, 100～160 hours ball milling time;
(3) material behind the ball milling is placed drying in the vacuum drying oven, dry back material sieves in the cupboard of nitrogen protection is arranged;
(4) adopt hot-pressing sintering technique, as sintering atmosphere, sintering range is 1600～1900 ℃ with nitrogen, and pressure is 25～40MPa, and soaking time is 10～40min, by means of B in the hot pressed sintering process
4C and (W, Ti) in-situ chemical reaction of C generation B
4C/TiB
2/ W
2B
5And the preparation ceramic sand jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021355991A CN1179919C (en) | 2002-10-08 | 2002-10-08 | Prepn process of sand blasting ceramic nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021355991A CN1179919C (en) | 2002-10-08 | 2002-10-08 | Prepn process of sand blasting ceramic nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403407A CN1403407A (en) | 2003-03-19 |
| CN1179919C true CN1179919C (en) | 2004-12-15 |
Family
ID=4748272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021355991A Expired - Fee Related CN1179919C (en) | 2002-10-08 | 2002-10-08 | Prepn process of sand blasting ceramic nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1179919C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297513C (en) * | 2005-04-06 | 2007-01-31 | 山东大学 | Technique for preparing ceramic nozzle possessing gradient function for coal water slurry |
| CN100448797C (en) * | 2005-11-15 | 2009-01-07 | 山东大学 | Boron carbide base ceramic sand jet material |
| CN102537954B (en) * | 2011-12-23 | 2013-12-18 | 山东大学 | Preparation process of laminated ceramic coal water slurry nozzle |
| CN106365665A (en) * | 2016-08-26 | 2017-02-01 | 桐城市明丽碳化硼制品有限公司 | Ceramic nozzle compounded by boron carbide-zirconia |
| CN107586134B (en) * | 2017-03-07 | 2020-10-27 | 鲁东大学 | Preparation method of laminated ceramic nozzle based on stress wave theory |
| CN108439988A (en) * | 2018-05-16 | 2018-08-24 | 苏州汉尼威电子技术有限公司 | A kind of high-performance water knife ceramics sandpipe and preparation method thereof |
-
2002
- 2002-10-08 CN CNB021355991A patent/CN1179919C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1403407A (en) | 2003-03-19 |
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