CN1876887A - Metal workpiece with vanadium-niobium impregnated surface using borax molten salt as carrier and production method thereof - Google Patents
Metal workpiece with vanadium-niobium impregnated surface using borax molten salt as carrier and production method thereof Download PDFInfo
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- CN1876887A CN1876887A CN 200610021335 CN200610021335A CN1876887A CN 1876887 A CN1876887 A CN 1876887A CN 200610021335 CN200610021335 CN 200610021335 CN 200610021335 A CN200610021335 A CN 200610021335A CN 1876887 A CN1876887 A CN 1876887A
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- niobium
- vanadium
- borax
- fused salt
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Abstract
The invention provides a metal work which selects borax fused salt as carrier surface and is complexly filtered with vanadium-niobium. The said metal work includes placing the metalwork base with more than 0.4% carbon content and hardening temperature higher than 850 DEG C into borax fused salt containing vanadium, niobium and aluminum powder, producing chemical reaction by the metal atom of the borax fused salt and carbon and nitrogen atoms of the work base, and forming the said metal work of metallic carburization zone containing vanadium-niobium by diffusing on the work base surface. The said metalwork has a high superficial hardness which can arrive at more than 3000HV and a long durability. The another purpose of this invention is to provide the method of production of metal work which selects borax fused salt as carrier surface and is complexly filtered with vanadium-niobium, in which the method is environment-friendly and energy-saving and has a short period of production.
Description
Technical field:
The present invention is relevant with metal works and production method thereof, is that the metal works and the production method thereof of the compound infiltration vanadium of carrier surface niobium is relevant with what can make mould, standardized component, component of machine etc. with the borax fused salt especially.
Background technology:
Material is the natural resources that people depend on for existence.Because the raising of living standards of the people and the growth of consumers demand, the natural resources that people depend on for existence is more and more rare.
According to incompletely statistics, the inefficacy of metal works (mould, standardized component, mechanical part etc.) quite a few be since wearing and tearing cause.Because traditional thermal treatment and surface-treated limitation, premature failure has been wasted non-renewable natural resources greatly thereby a lot of material is not also brought into play its due potentiality has increased social total cost.
Known Wimet poor toughness, difficulty of processing is big, the cost height, the cycle is long.Existing metal works at metal works matrix surface infiltration vanadium or niobium, the metal works difference of hardness of single vanadinizing, the metal works production cycle of singly oozing niobium is long.
Summary of the invention:
The objective of the invention is can reach more than the 3000HV for a kind of surface hardness height is provided, long service life be the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt.Another object of the present invention is for environmental protection, energy-conservation is provided, and with short production cycle is the production method of the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt.
The object of the present invention is achieved like this:
The present invention is the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt, this metal works be with carbon content greater than 0.4%, quenching temperature is higher than 850 ℃ metal works matrix and places the borax fused salt that contains vanadium, niobium and aluminium powder, produce chemical reaction by the atoms metal in the borax fused salt and the carbon in the workpiece substrate, nitrogen-atoms, be diffused in the metal works that the workpiece substrate surface forms the metallic carbide layer that contains the vanadium niobium, metallic carbide layer and thickness can be 5～15 μ m.
Method of the present invention comprises the steps:
1), prepare burden by mass percentage:
Disodium tetraborate 80～90%,
Vanadium Pentoxide in FLAKES 3～6%,
Niobium Pentxoxide 3～6%,
Aluminium powder 3～6%.
2), change salt: behind 900～950 ℃ of borax dehydrations, add Vanadium Pentoxide in FLAKES, Niobium Pentxoxide and aluminium powder respectively, be incubated 2～3 hours;
3), in methyl alcohol or gasoline, carry out the cleaning of workpiece substrate;
4), under 500～570 ℃ of conditions,, can adopt well formula or box-type furnace to the workpiece substrate preheating;
5), workpiece substrate is packed in the metal leakage furnace into 800～900 ℃ of charging temperatures;
6), metallic cementation: be incubated 4～16 hours down at 850～1050 ℃, press material different choice temperature and soaking time;
7), heat up or be cooled to quenching and preserving heat, determine soaking time according to the workpiece substrate size with stove;
8), quenching can be adopted 40～70 ℃ of conventional quenching oils;
9), clean: can adopt 100 ℃ of process waters to clean;
10), tempering: method with conventional thermal treatment together;
11), clean: can adopt process water+3%NaNO
2Clean;
12), polishing;
13), check: qualified being with the borax fused salt is that carrier surface infiltrates the metal works that the vanadium niobium forms the metallic carbide layer that contains the vanadium niobium, Vanadium Pentoxide in FLAKES, Niobium Pentxoxide is the metallic cementation agent, aluminium powder is a reductive agent, disodium tetraborate (industrial borax) is carrier and boron supplying agent, borax can clear great workpiece surface effect, borax can dilute oxide compound, make workpiece substrate be difficult for oxidation, its fusing point is 740 ℃, working temperature is easy to make vanadium at 850 ℃～1050 ℃ warm areas, niobium suspends in borax soln, is beneficial to the vanadium in the workpiece substrate surface absorption fused salt, the niobium metal atom.The decomposition temperature of borax is 1530 ℃, and the working temperature of this production method does not produce any public hazards, is easy to environmental protection far below its decomposition temperature borax.
The granularity of above-mentioned Vanadium Pentoxide in FLAKES is 0.043～0.124mm, and the granularity of Niobium Pentxoxide is 0.043～0.124mm,, aluminum powder particle size is 0.124～0.246mm.
Adopt 40～70 ℃ of quenching oils to carry out oil quenching during above-mentioned quenching process.
Adopt neutral salt to dissolve into during above-mentioned quenching process to carry out the second stage with salt made from earth containing a comparatively high percentage of sodium chloride again after the capable first step is quenched and quench, quenchant can adopt BaCl when quenching for the first time
2, NaCl, KCl etc., can reduce workpiece deformation amount and cracking trend, quenchant can adopt NaNO when quench in the second stage
3, KNO
3Deng, can increase temper resistance, the first step is quenched and quench in the second stage determines temperature and soaking time according to the kind of material and the size of workpiece substrate, method is with conventional thermal treatment together.
Niobium is soluble in NaOH among the present invention
2Solution and can suppress the generation of metavanadic acid barium, thus the cleaning difficult problem of borax molten salt diffusion metallizing thoroughly solved, having reduced the cleaning difficulty, scavenging period test in the past can be shortened half; By test and production proof, the vanadium niobium oozes the comparable generation that niobium more can promote and accelerate infiltration layer of singly oozing altogether, can obtain higher hardness than single vanadinizing.Thereby shortened the production cycle, save energy improved wear resistance again; Niobium is added on as penetration enhancer and can guarantees in the borax fused salt that contains vanadium at higher relatively quenching temperature time control combinations particle size, thereby plays the austenite crystal refinement, increases the effect of density; Niobium, vanadium all have very high fusing point with the compound of generations such as the little elements, such as boron of some atomic radiuses, carbon, nitrogen, can increase by the hardness of metallic cementation material surface;
The present invention is a carrier with the borax fused salt, wherein fuses into vanadium, niobium, forms the vanadium niobium metal carburization zone that contains the vanadium niobium at surface infiltration vanadium, two kinds of metals of niobium of placing the borax fused salt, has following advantage:
(1), surface hardness improves phenomenons such as solution wearing and tearing comprehensively, consumption hair greatly.Under the equal operating mode, on average improve work-ing life more than ten times; A lot of fields can replace Wimet.
(2), with the matrix metallurgical binding, the surface goes out the most excellent stripper-resistance;
(3) but repeated treatments;
(4) no matter the workpiece shape how, can both form uniform coating, workpiece deformation is less in the treating processes;
(5), the surfaceness after the lining with handle before roughly the same, the metal works surface working is smooth, can directly use after the processing.
(6), applied range, be applied to industries such as mould, machinery, electronics, automobile component, five metals, standardized component, steel pipe and not only require wear-resisting but also require mould of flexible etc.; Can make industries such as iron and steel, machinery, aviation sky, metal processing to some special component that not only required high abrasion but also required high tenacity.Can make industries such as iron and steel, machinery, aviation sky, metal processing to some special component that not only required high abrasion but also required high tenacity.The metal works long service life of the present invention of making mould is used the work-ing life of Conventional Heat Treatment mode processed mould (workpiece) considerably beyond the import moulding stock, mould, standardized component, mechanical part user by domestic automobile component, steel pipe, spring manufacturing used proof in nearly 3 years on average to improve than prior heat treatment mode more than 10 times its work-ing life after the workpiece of the wear out failure composite cementation metal treatment of the present invention under equal operating mode, substantially exceed Wimet its work-ing life.
Metal works surface hardness height of the present invention can reach more than the 3000HV long service life.The inventive method is produced metal works cycle weak point, environmental protection, energy-conservation.
Description of drawings:
Fig. 1 is a metal works structural representation of the present invention.
Embodiment:
Embodiment 1:
Referring to Fig. 1, present embodiment 1 metal works is by carbon content 2.0～2.3%, the Cr that quenching temperature is 950～980 ℃
12Matrix 1 and the metallic carbide layer that contains the vanadium niobium 2 composition that form at matrix surface infiltration vanadium, niobium metal.
The production method of present embodiment 1 metal works comprises the steps:
1), prepare burden by mass percentage:
Disodium tetraborate 82%,
Vanadium Pentoxide in FLAKES 8%,
Niobium Pentxoxide 5%,
Aluminium powder 5%.
2), change salt: behind 900～950 ℃ of borax dehydrations, add Vanadium Pentoxide in FLAKES, Niobium Pentxoxide and aluminium powder respectively, be incubated 2～3 hours;
3), in methyl alcohol (or gasoline or clean-out system), carry out the cleaning of workpiece substrate;
4), can adopt well formula or box-type furnace to workpiece substrate preheating 2 hours under 500～570 ℃ of conditions;
5), workpiece substrate is packed in the metal leakage furnace into 850～900 ℃ of charging temperatures;
6), metallic cementation: be incubated 5～6 hours down at 950 ± 10 ℃;
7), with 960 ± 10 ℃ of temperature of stove intensification degree to quenching and preserving heat, soaking time 1 hour;
8), adopt 40～70 ℃ of conventional quenching oils that quench;
9), adopt 100 ℃ of process waters to clean;
10), 180～210 ℃ of tempering 2 times, each tempering 4 hours, method with conventional thermal treatment with;
11), adopt process water+3%NaNO
2Solution cleans:
12), polishing:
13), check: qualified being with the borax fused salt is that carrier surface infiltrates the metal works that the vanadium niobium forms the metallic carbide layer that contains the vanadium niobium.
The granularity of above-mentioned Vanadium Pentoxide in FLAKES is 0.043～0.124mm, and the granularity of Niobium Pentxoxide is 0.043～0.124mm, and aluminum powder particle size is 0.124～0.246mm.
Embodiment 2:
The structure of present embodiment 2 metal works is basic and embodiment 1 is same, and not existing together is that the metal works matrix is a carbon content 1.45～1.7%, the Cr12MoV that quenching temperature is 1000～1040 ℃.
The production method of present embodiment 2 metal works is as follows:
Method of the present invention comprises the steps:
1), prepare burden by mass percentage:
Disodium tetraborate 80%,
Vanadium Pentoxide in FLAKES 10%,
Niobium Pentxoxide 5%,
Aluminium powder 5%.
2), change salt: behind 900～950 ℃ of borax dehydrations, add Vanadium Pentoxide in FLAKES, Niobium Pentxoxide and aluminium powder respectively, be incubated 2～3 hours;
3), in methyl alcohol or gasoline, carry out the cleaning of workpiece substrate;
4), under 500～570 ℃ of conditions,, can adopt well formula or box-type furnace to the workpiece substrate preheating;
5), workpiece substrate is packed in the metal leakage furnace into 850～900 ℃ of charging temperatures;
6), metallic cementation: be incubated 5～6 hours down at 950 ℃;
7), to 1010 ± 10 ℃ of quenching temperatures, be incubated 1 hour with the stove heating and cooling;
8), quenching can be adopted 40～70 ℃ of conventional quenching oils;
9), clean: can adopt 100 ℃ of process waters to clean;
10), tempering is 2 times under 180～210 ℃ of temperature, and each tempering time 4 hours, method are with conventional thermal treatment together;
11), with process water+3%NaNO
2Clean;
12), polishing:
13), check: qualified being with the borax fused salt is that carrier surface infiltrates the metal works that the vanadium niobium forms the metallic carbide layer that contains the vanadium niobium.
The granularity of above-mentioned Vanadium Pentoxide in FLAKES is 0.043～0.124mm, and the granularity of Niobium Pentxoxide is 0.043～0.124mm, and aluminum powder particle size is 0.124～0.246mm.
Embodiment 3:
The structure of present embodiment 3 metal works is basic and embodiment 1 is same, and not existing together is that the metal works matrix is a carbon content 0.95～1.05%, the Cr5MolV that quenching temperature is 920～980 ℃.
The production method of present embodiment 3 metal works comprises the steps:
1), prepare burden by mass percentage:
Disodium tetraborate 85%,
Vanadium Pentoxide in FLAKES 5%,
Niobium Pentxoxide 5%,
Aluminium powder 5%.
2), change salt: behind 900～950 ℃ of borax dehydrations, add Vanadium Pentoxide in FLAKES, Niobium Pentxoxide and aluminium powder respectively, be incubated 2～3 hours;
3), in methyl alcohol (or gasoline or clean-out system), carry out the cleaning degreasing of workpiece substrate;
4), adopt well formula or box-type furnace under 500～570 ℃ of conditions to workpiece substrate preheating 2 hours,
5), workpiece substrate is packed in the metal leakage furnace into 850～900 ℃ of charging temperatures;
6), metallic cementation: be incubated 5～6 hours down at 950 ℃;
7), be warming up to 960 ± 10 ℃ of quenching temperatures, soaking time 1 hour with stove;
8), adopt 40～70 ℃ of normal quenching oil quenching;
9), adopt 100 ℃ of process waters to clean;
10), 180～210 ℃ of tempering 2 times, each tempering time 4 hours, method with conventional thermal treatment with;
11), clean:
12), polishing:
13), check: qualified being with the borax fused salt is that carrier surface infiltrates the metal works that the vanadium niobium forms the metallic carbide layer that contains the vanadium niobium.
The granularity of above-mentioned Vanadium Pentoxide in FLAKES is 0.043～0.124mm, and the granularity of Niobium Pentxoxide is 0.043～0.124mm,, aluminum powder particle size is 0.124～0.246mm.
Through the client of supply chains such as a vapour, Baosteel, GE, FORO, VOLKSWAGEN, TOYOTA, HONDA, SUZUKI and trying out of numerous domestic national defense industry, with wearing and tearing is the metal works of the present invention of main failure forms: on average improve more than 10 times than the prior heat treatment mode under equal operating mode its work-ing life as mould, standardized component, mechanical part, can be widely used in industries such as mould, machinery, electronics, automobile component, five metals, standardized component, steel pipe.
The various embodiments described above are that foregoing of the present invention is further described, but this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to the foregoing description.All technology that realizes based on foregoing all belong to scope of the present invention.
Claims (5)
1, with the borax fused salt is the metal works of the compound infiltration vanadium of carrier surface niobium, this metal works be with carbon content greater than 0.4%, quenching temperature is higher than 850 ℃ metal works matrix and places the borax fused salt that contains vanadium, niobium and aluminium powder, produce chemical reaction by the atoms metal in the borax fused salt and the carbon in the workpiece substrate, nitrogen-atoms, be diffused in the metal works that the workpiece substrate surface forms the metallic carbide layer that contains the vanadium niobium.
2, as claimed in claim 1 is the production method of the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt, it is characterized in that this method comprises the steps:
1), prepare burden by mass percentage:
Disodium tetraborate 80～90%,
Vanadium Pentoxide in FLAKES 3～6%,
Niobium Pentxoxide 3～6%,
Aluminium powder 3～6%.
2), change salt: behind 900～950 ℃ of borax dehydrations, add Vanadium Pentoxide in FLAKES, Niobium Pentxoxide and aluminium powder respectively, be incubated 2～3 hours;
3), in methyl alcohol or gasoline, carry out the cleaning of workpiece substrate;
4), under 500～570 ℃ of conditions to the workpiece substrate preheating;
5), workpiece substrate is packed in the metal leakage furnace into 800～900 ℃ of charging temperatures
6), metallic cementation: be incubated 4～16 hours down at 850～1050 ℃;
7), heat up or be cooled to quenching temperature, insulation with stove;
8), quench;
9), clean;
10), tempering;
11), clean;
12), polishing;
13), check: qualified being with the borax fused salt is that carrier surface infiltrates the metal works that the vanadium niobium forms the metallic carbide layer that contains the vanadium niobium.
3, as claimed in claim 2 is the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt, the granularity that it is characterized in that Vanadium Pentoxide in FLAKES is 0.043～0.124mm, the granularity of Niobium Pentxoxide is 0.043～0.124mm, and aluminum powder particle size is 0.124～0.246mm.
4, as claim 2 or 3 described be the production method of the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt, adopt 40～70 ℃ of quenching oils to carry out oil quenching when it is characterized in that quenching process.
5, as claim 2 or 3 described be the production method of the metal works of the compound infiltration vanadium of carrier surface niobium with the borax fused salt, adopt neutral salt to dissolve into when it is characterized in that quenching process to carry out the second stage with salt made from earth containing a comparatively high percentage of sodium chloride again after the capable first step is quenched and quench.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100213357A CN100497720C (en) | 2006-07-07 | 2006-07-07 | production method of metal workpiece with vanadium-niobium impregnated surface using borax molten salt as carrier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100213357A CN100497720C (en) | 2006-07-07 | 2006-07-07 | production method of metal workpiece with vanadium-niobium impregnated surface using borax molten salt as carrier |
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| CN1876887A true CN1876887A (en) | 2006-12-13 |
| CN100497720C CN100497720C (en) | 2009-06-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104847662A (en) * | 2015-06-09 | 2015-08-19 | 广东美芝制冷设备有限公司 | Compressing component of compressor, preparation method method of compressing component, compressor and refrigerating device |
| CN106222608A (en) * | 2016-08-24 | 2016-12-14 | 杭州持正科技股份有限公司 | Bearing pin surface vanadium niobium oozes reinforcement process altogether |
| CN106282910A (en) * | 2016-08-24 | 2017-01-04 | 杭州持正科技股份有限公司 | Niobium reinforcement process is oozed on bearing pin surface |
| CN106676461A (en) * | 2016-11-29 | 2017-05-17 | 河南科技大学 | Micro-alloyed rare earth treated steel for high speed railway and preparation process of micro-alloyed rare earth treated steel |
| CN112176339A (en) * | 2019-07-05 | 2021-01-05 | 天津欧亚西斯金属制品有限公司 | Preparation method of special coating for automobile outer covering part mold |
| CN114015974A (en) * | 2021-10-21 | 2022-02-08 | 无锡智慧桃园模具有限公司 | Energy-saving TD (time division) process based on vanadium carbide coating |
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| KR101135007B1 (en) * | 2009-09-04 | 2012-04-19 | 신진우 | The solution for the chromium diffusion and the manufacturing method of the the chromium diffusion layer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847662A (en) * | 2015-06-09 | 2015-08-19 | 广东美芝制冷设备有限公司 | Compressing component of compressor, preparation method method of compressing component, compressor and refrigerating device |
| CN106222608A (en) * | 2016-08-24 | 2016-12-14 | 杭州持正科技股份有限公司 | Bearing pin surface vanadium niobium oozes reinforcement process altogether |
| CN106282910A (en) * | 2016-08-24 | 2017-01-04 | 杭州持正科技股份有限公司 | Niobium reinforcement process is oozed on bearing pin surface |
| CN106676461A (en) * | 2016-11-29 | 2017-05-17 | 河南科技大学 | Micro-alloyed rare earth treated steel for high speed railway and preparation process of micro-alloyed rare earth treated steel |
| CN112176339A (en) * | 2019-07-05 | 2021-01-05 | 天津欧亚西斯金属制品有限公司 | Preparation method of special coating for automobile outer covering part mold |
| CN114015974A (en) * | 2021-10-21 | 2022-02-08 | 无锡智慧桃园模具有限公司 | Energy-saving TD (time division) process based on vanadium carbide coating |
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