CN1011709B - Metal-rare-earth co-diffused salt bath - Google Patents
Metal-rare-earth co-diffused salt bathInfo
- Publication number
- CN1011709B CN1011709B CN 89101222 CN89101222A CN1011709B CN 1011709 B CN1011709 B CN 1011709B CN 89101222 CN89101222 CN 89101222 CN 89101222 A CN89101222 A CN 89101222A CN 1011709 B CN1011709 B CN 1011709B
- Authority
- CN
- China
- Prior art keywords
- rare earth
- salt bath
- borax
- cementation
- sodium
- Prior art date
- 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.)
- Expired
Links
Abstract
The present invention provides a salt bath for the co-cementation of borax-base rare earth. Compared with a monometallic cementation layer, the property of a co-cementation layer is obviously enhanced. A process is stable, and a cementation rate is enhanced by more than 13%. The salt path takes obvious effect on the application to high pressure pump valves, sampling valves and hydraulic multiway change valves.
Description
The present invention relates to thermo-chemical treatment, particularly metal-rare-earth co-diffused salt bath.
Since the 1970's Japan Toyota Company research and development salt bath metallic cementation, because of its equipment simple, process stabilizing, can form one deck extreme hardness at steel piece surface, the multiple layer of the carbide that wear-resistant and corrosion resistance is good receives the concern of industrial communitys such as domestic and international metallurgy, machinery, oil and chemical industry.In recent years, along with people to rare earth understanding progressively deeply, gradually rare earth is applied to the thermo-chemical treatment field, and, obtained positive effect, still, do not find the application of rare earth in the salt bath metallic cementation so far yet.
The objective of the invention is to rare earth is applied to the salt bath metallic cementation, with the processing performance and the penetrated layer property of further raising salt bath metallic cementation.
The present invention is achieved in that in borax base salt bath and adds rare earth alloy that concrete norm is as follows:
Borax 40～87%, for metal agent 8～20%, rare earth alloy 3～15%, sodium-chlor 0～10%, Sodium Fluoride 0～10%, sodium fluoroaluminate 0～10%, 800～1100 ℃ of soaking time 〉=1 of working temperature hour wherein mean the Cr that chromising is used for metal agent
2O
3, the V that vanadinizing is used
2O
5, ooze the Nb that niobium is used
2O
5With ooze the T that titanium is used
1O
2Deng metal oxide etc.; Rare earth alloy SYSTEM is made up of AL10～90% and rare earth, this rare earth can be with rare earth metals such as mishmetal or cerium or lanthanum or yttriums, the present invention is applicable to and realizes chromising one rare earth on steel and cast iron, vanadium one rare earth, metal one RE co-permeating such as niobium one rare earth and titanium one rare earth, through X-ray diffraction, XRF and scanning electronic microscope are to the analysis revealed of infiltration layer: have rare earth metal to exist in the infiltration layer, this co-penetration layer is than simple metal (chromium for example, niobium and titanium etc.) solidity to corrosion of infiltration layer, high temperature oxidation resistance, wear resistance, shock resistance fatigue and toughness etc. are better, for example, by the chemical industry of chromium one RE co-permeating of the present invention high pressure pump valve that, extended to 30 days and 71 days from 15 days and 6 days of simple chromising the work-ing life of sampling valve respectively.Extend to 126.3 ten thousand times by by simple vanadinizing 900,000 times of impact life-span of the hydraulic multichannel conversion valve of vanadium one RE co-permeating of the present invention, process stabilizing of the present invention also makes infiltration rate improve more than 13%.
The present invention can specifically implement by following examples:
Example 1 borax 40～87%, tri-chlorination two chromium 8～20%, rare earth alloy 3～15%, sodium-chlor 0～10%, Sodium Fluoride 0～10%, sodium fluoroaluminate 0～10%, 800～1100 ℃ of working temperatures, soaking time 〉=1 hour.
Embodiment carries out like this, just can obtain chromium one RE co-permeating layer according to the invention.
Example 2 boraxs 40～87%, Vanadium Pentoxide in FLAKES 8～20%, rare earth alloy 3～15%, sodium-chlor 0～10%, Sodium Fluoride 0～10%, sodium fluoroaluminate 0～10%, 800～1100 ℃ of soaking time 〉=1 of working temperature hour.
Embodiment carries out like this, just can obtain niobium one RE co-permeating layer according to the invention.
Example 3 boraxs 40～87%, Niobium Pentxoxide 8～20%, rare earth alloy 3～15%, sodium oxide 0～10%, Sodium Fluoride 0～10%, sodium fluoroaluminate 0～10%, 800～1100 ℃ of working temperatures, soaking time 〉=1 hour.
Embodiment carries out like this, just can obtain niobium one RE co-permeating layer according to the invention.
Example 4 boraxs 40～87%, titanium dioxide 8～20%, rare earth alloy 3～15%, sodium oxide 0～10%, Sodium Fluoride 0～10%, sodium fluoroaluminate 0～10%, 800～1100 ℃ of working temperatures, soaking time 〉=1 hour.
Embodiment carries out like this, just can obtain titanium one RE co-permeating layer according to the invention.
Claims (4)
1, a kind of metallic cementation borax base salt bath is characterized in that having added rare earth alloy in this salt bath, and concrete norm is as follows:
Borax 40～87%, for metal agent 8～20%, rare earth alloy 3～15%, sodium-chlor 0～10%, Sodium Fluoride 0～10%, sodium fluoroaluminate 0～10%, 800～1100 ℃ of working temperatures, soaking time 〉=1 hour.
2,, it is characterized in that referring to respectively the oxide compound of metals such as chromising vanadium niobium and titanium for metal agent according to the described metallic cementation borax of claim 1 base salt bath.
3,, it is characterized in that rare earth alloy is made up of aluminium 10～90% and rare earth according to claim 1 or 2 described metallic cementation borax base salt baths.
4,, it is characterized in that rare earth can be with rare earth metals such as mishmetal or cerium or lanthanum or yttriums according to the described metallic cementation borax of claim 3 base salt bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89101222 CN1011709B (en) | 1989-03-04 | 1989-03-04 | Metal-rare-earth co-diffused salt bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89101222 CN1011709B (en) | 1989-03-04 | 1989-03-04 | Metal-rare-earth co-diffused salt bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041977A CN1041977A (en) | 1990-05-09 |
| CN1011709B true CN1011709B (en) | 1991-02-20 |
Family
ID=4854192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89101222 Expired CN1011709B (en) | 1989-03-04 | 1989-03-04 | Metal-rare-earth co-diffused salt bath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011709B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942634A (en) * | 2009-09-04 | 2011-01-12 | 崔明虎 | Chromium spreading immersion liquid and method for producing specific steel through chromium spreading immersion |
Families Citing this family (13)
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|---|---|---|---|---|
| CN102383134A (en) * | 2010-08-27 | 2012-03-21 | 上海明嘉金属科技有限公司 | Method for surface strengthening treatment of automobile forming precision die |
| CN102443810A (en) * | 2011-12-07 | 2012-05-09 | 吉林大学 | Surface strengthening treatment method of cold-working die steel punch |
| CN103103476B (en) * | 2013-01-31 | 2015-09-30 | 武汉理工大学 | A kind of salt bath niobium chromium diffusion medium and application art thereof |
| CN103276349B (en) * | 2013-05-28 | 2015-04-08 | 西南石油大学 | Low-carbon steel surface salt bath rare earth vanadium-titanium boronizing agent and treatment process thereof |
| CN103526154A (en) * | 2013-10-30 | 2014-01-22 | 重庆理工大学 | Chrome alum rare earth multicomponent cementation borax salt bath penetration metal penetrating agent and application method thereof |
| CN103981339A (en) * | 2014-05-15 | 2014-08-13 | 张佑锋 | High-speed steel surface crystal porcelainizing formula and process method thereof |
| CN104404445B (en) * | 2014-11-19 | 2017-12-01 | 杭州持正科技有限公司 | The chromvanadizing technique of automobile chain bearing pin |
| 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 |
| CN105331926B (en) * | 2015-11-05 | 2018-03-20 | 广西大学 | N C Cr V RE multicomponent thermochemical treatment materials for 45 steel surface reinforcements |
| CN105951036B (en) * | 2016-05-20 | 2019-05-24 | 武汉科技大学 | A kind of salt bath rare earth Cr-Ti coating agent and its technique for applying |
| CN106119770A (en) * | 2016-08-24 | 2016-11-16 | 杭州持正科技股份有限公司 | Bearing pin surface vanadium titanium oozes reinforcement process altogether |
| CN108359931B (en) * | 2018-03-07 | 2020-07-14 | 浙江三基钢管有限公司 | Vanadium impregnation method for cold machining die |
| CN110938795A (en) * | 2019-10-26 | 2020-03-31 | 安徽黄山恒久链传动有限公司 | Heat treatment method for avoiding stainless steel cracking |
-
1989
- 1989-03-04 CN CN 89101222 patent/CN1011709B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942634A (en) * | 2009-09-04 | 2011-01-12 | 崔明虎 | Chromium spreading immersion liquid and method for producing specific steel through chromium spreading immersion |
| CN101942634B (en) * | 2009-09-04 | 2013-01-16 | 崔明虎 | Chromium spreading immersion liquid and method for producing specific steel through chromium spreading immersion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041977A (en) | 1990-05-09 |
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