CN1271245C - High rate steel surface ternary boride cermet coating preparing process using reactive sintering method - Google Patents
High rate steel surface ternary boride cermet coating preparing process using reactive sintering method Download PDFInfo
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- CN1271245C CN1271245C CN 200410013074 CN200410013074A CN1271245C CN 1271245 C CN1271245 C CN 1271245C CN 200410013074 CN200410013074 CN 200410013074 CN 200410013074 A CN200410013074 A CN 200410013074A CN 1271245 C CN1271245 C CN 1271245C
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Abstract
The present invention relates to a preparing process of a high-speed steel surface coating, particularly to a process of preparing high-speed steel surface ternary boride cermet coating by a powder metallurgic method. The present invention is characterized in that the preparing process comprises the components of 25 wt% to 40 wt% of FeB powder, 35 wt% to 50 wt% of Mo powder, 1 wt% to 10 wt% of Ni powder, 1 wt% to 10 wt% of Cr powder and 10 wt% to 20 wt% of Fe powder, the powder is carried out with ball milling through a ball mill to be mixed and then is modulated by water glass which accounts for 5 wt% to 10 wt% of the powder, the modulated mixing material is coated on the surface of a high-speed steel product and then is sintered in a vacuum furnace after dried, the sintering temperature is from 1200 DEG C to 1350 DEG C, the heat preserving time is from 10m to 60m, and then a ternary boride cermet coating firmly combined with a high-speed steel basal body is obtained. The present invention can solve the defect of insufficient abrasion resistance and heat resistance existing in the high-speed steel product, and greatly extends the service life of the high-speed steel product.
Description
Technical field
The present invention relates to a kind of preparation method of surface of high speed steel coating, can solve rapid steel goods wear resistance, thermotolerance defect of insufficient, increase substantially its work-ing life.
Background technology
Rapid steel contains elements such as higher carbon and a large amount of tungsten, molybdenum, chromium, vanadium, cobalt, hardening capacity is very high, obtains tempered martensite and granular carbide after the thermal treatment, and produces the secondary hardening effect, have higher intensity, hardness and red hardness, and have suitable plasticity and toughness concurrently.But, rapid steel composition and weave construction have determined that its wear resistance and thermotolerance are limited, in addition, thick and the uneven distribution of carbide in the rapid steel, in heat treatment process, be difficult to solid solution, reduced the austenitic alloy degree, also caused wear resistance, the thermotolerance deficiency of rapid steel, be difficult to satisfy the modern processing requirement more and more higher mould, tool material.In actual applications, both require material to have high intensity, toughness under many operating modes, and required material to have high hardness, good wear resistance again simultaneously.Adopt single material to make, be difficult to satisfy the requirement of product over-all propertieies such as intensity, toughness, hardness and wear resistancies.The inefficacy of mechanical component is from the surface mostly, and the surface strength of material directly influences the work-ing life of mechanical component.Process for treating surface can improve the surface property of material, improves the work-ing life of component of machine.The main technique method has: chemical Vapor deposition process, physical vaporous deposition, laser melting and coating technique, hot-spraying techniques, sol-gel method, self propagating high temperature synthesis method etc., these method main drawbacks are thinner thicknesses of coating or coating, combine instability with the interface of base material, and bonding strength is on the low side, facility investment is big, complex process.
Summary of the invention
There are wear resistance, thermotolerance deficiency in order to overcome rapid steel, improve the work-ing life of rapid steel goods, the present invention adopts powder metallurgic method, prepares the ternary boride cement coating at surface of high speed steel, make it keeping higher-strength and flexible simultaneously, have higher wear resistance and thermotolerance.
The technical solution adopted in the present invention is: reaction sintering prepares the method for surface of high speed steel ternary boride cement coating, getting component is: FeB, Mo, Ni, Cr, the powder of Fe, its weight percent content is respectively: 25～40,35～50,1～10,1～10,10～20, after powder mixes through the ball mill ball milling, modulate with water glass, water glass accounts for 5～10% of powder gross weight, the compound that modulates is coated in the surface of rapid steel goods, dry back sintering in vacuum oven, 1200 ℃～1350 ℃ of sintering temperatures, soaking time 10 minutes～60 minutes obtains the ternary boride cement coating with the high speed steel substrate mortise behind the sintering.
Described powder diameter behind the ball mill ball milling is 10～20 μ m.
The coat-thickness that described compound is coated in the surface of rapid steel goods is 0.1～10mm.
Reaction sintering prepares ternary boride cement, is to utilize powder and boron or boride mixed powder and iron reaction in generation at high temperature ternary borides such as nickel, chromium, molybdenum, and reaches a kind of novel process of complete densification by the high-temperature liquid-phase sintering.The structure of its sintered compact is that the hard of ternary boride bonds mutually with iron-baseds such as nickeliferous, chromium, molybdenums mutually.Have very high hardness, wear resistance and thermotolerance.
The invention has the beneficial effects as follows, obtain and substrate material mortise and have certain thickness surperficial ternary boride cement coating, in high strength that keeps rapid steel and flexible while, the surface has very high hardness, wear resistance and thermotolerance, the wear resistance experiment shows, antiwear property can improve 5 times (as shown in Figure 1), can significantly improve the work-ing life of goods.
Description of drawings
Fig. 1 is wear resistance figure of the present invention
Embodiment
Embodiment 1: getting component is: the powder of FeB, Mo, Ni, Cr, Fe, and its weight percent content is respectively: 25,35,10,10,20, powder is inserted ball milling in the ball mill, and the powder diameter behind the ball mill ball milling is 10～20 μ m; Modulate with water glass, water glass accounts for 5% of powder gross weight, the compound that modulates is coated in the surface of rapid steel goods, coating thickness is 0.1mm, back to be dried sintering in vacuum oven, 1350 ℃ of sintering temperatures, soaking time 10 minutes obtains the ternary boride cement coating with the high speed steel substrate mortise behind the sintering.
Embodiment 2: getting component is: the powder of FeB, Mo, Ni, Cr, Fe, and its weight percent content is respectively: 40,35,5,10,10, powder is put into the ball mill ball milling, and the powder diameter behind the ball mill ball milling is 10～20 μ m; Modulate with water glass, water glass accounts for 7% of powder gross weight, the compound that modulates is coated in the surface of rapid steel goods, coating thickness is 5mm, back to be dried sintering in vacuum oven, 1200 ℃～1350 ℃ of sintering temperatures, soaking time 40 minutes obtains the ternary boride cement coating with the high speed steel substrate mortise behind the sintering.
Embodiment 3: getting component is: the powder of FeB, Mo, Ni, Cr, Fe, and its weight percent content is respectively: 30,40,10,5,15, powder is put into the ball mill ball milling, and the powder diameter behind the ball mill ball milling is 10～20 μ m; Modulate with water glass, water glass accounts for 8% of powder weight, the compound that modulates is coated in the surface of rapid steel goods, coating thickness is 6mm, back to be dried sintering in vacuum oven, 1200 ℃～1350 ℃ of sintering temperatures, soaking time 40 minutes obtains the ternary boride cement coating with the high speed steel substrate mortise behind the sintering.
Embodiment 4: getting component is: the powder of FeB, Mo, Ni, Cr, Fe, and its weight percent content is respectively: 40,38,1,1,20, powder is inserted ball milling in the ball mill, and the powder diameter behind the ball mill ball milling is 10～20 μ m; Modulate with water glass, water glass accounts for 10% of powder gross weight, the compound that modulates is coated in the surface of rapid steel goods, coating thickness is 10mm, back to be dried sintering in vacuum oven, 1200 ℃～1350 ℃ of sintering temperatures, soaking time 60 minutes obtains the ternary boride cement coating with the high speed steel substrate mortise behind the sintering.
The present invention can also solve the mechanically resistant material coating for preparing or a series of matter of science and technologys of coating on steel material surface, comprise: the selection principle of preparation ternary boride cement coating composition, determine the forming method and the sintering process of preparation ternary boride cement coating, disclose the interface structure feature and the sintering mechanism of ternary boride cement coating.
Claims (3)
1. reaction sintering prepares the method for surface of high speed steel ternary boride cement coating, it is characterized in that getting component is: FeB, Mo, Ni, Cr, the powder of Fe, its weight percent content is respectively: 25～40,35～50,1～10,1～10,10～20, behind the powder process ball mill ball milling, modulate with water glass, water glass accounts for 5～10% of powder gross weight, the compound that modulates is coated in the surface of rapid steel goods, dry back sintering in vacuum oven, 1200 ℃～1350 ℃ of sintering temperatures, soaking time 10 minutes～60 minutes obtains the ternary boride cement coating with the high speed steel substrate mortise behind the sintering.
2. prepare the method for surface of high speed steel ternary boride cement coating according to the described reaction sintering of claim 1, it is characterized in that: described powder diameter behind the ball mill ball milling is 10～20 μ m.
3. prepare the method for surface of high speed steel ternary boride cement coating according to the described reaction sintering of claim 1, it is characterized in that: the coat-thickness that described compound is coated in the surface of rapid steel goods is 0.1～10mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410013074 CN1271245C (en) | 2004-04-22 | 2004-04-22 | High rate steel surface ternary boride cermet coating preparing process using reactive sintering method |
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| CN 200410013074 CN1271245C (en) | 2004-04-22 | 2004-04-22 | High rate steel surface ternary boride cermet coating preparing process using reactive sintering method |
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| CN1570208A CN1570208A (en) | 2005-01-26 |
| CN1271245C true CN1271245C (en) | 2006-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899659A (en) * | 2012-10-16 | 2013-01-30 | 哈尔滨工业大学 | Preparation method of boron nitride nanotube hydrophobic membrane |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510191C (en) * | 2006-12-08 | 2009-07-08 | 湖北工业大学 | Method of plasma spraying preparation of ternary boride-based metal ceramic coating |
| CN102773991B (en) * | 2012-06-21 | 2015-07-01 | 浙江华业塑料机械有限公司 | Metallic screw and manufacturing method for same |
| CN102717507B (en) * | 2012-06-21 | 2015-02-25 | 浙江华业塑料机械有限公司 | Metal cylinder and manufacturing method thereof |
| CN106587088B (en) * | 2016-10-25 | 2019-10-18 | 广东工业大学 | A kind of novel tertiary osmium ruthenium boride hard material and preparation method thereof |
| CN107586535A (en) * | 2017-08-03 | 2018-01-16 | 北京金科复合材料有限责任公司 | A kind of micropore ferrous metal ceramic material and preparation method thereof |
| CN109133937B (en) * | 2018-08-08 | 2021-05-25 | 天津德天助非晶纳米科技有限公司 | Ternary boride and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102899659A (en) * | 2012-10-16 | 2013-01-30 | 哈尔滨工业大学 | Preparation method of boron nitride nanotube hydrophobic membrane |
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