CN85100155A - The salt bath furnace salt of anti-oxidation decarburizing - Google Patents
The salt bath furnace salt of anti-oxidation decarburizing Download PDFInfo
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- CN85100155A CN85100155A CN 85100155 CN85100155A CN85100155A CN 85100155 A CN85100155 A CN 85100155A CN 85100155 CN85100155 CN 85100155 CN 85100155 A CN85100155 A CN 85100155A CN 85100155 A CN85100155 A CN 85100155A
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Abstract
The present invention is the thermal treatment salt bath furnace salt that is used to prevent the workpiece oxidation and decarbonization, according to the reduction principle, in halide salt, sneak into the special efficacy reductor---dewatering borax and silicon carbide, reformed and used the salt system, realized preventing the workpiece oxidation and decarbonization in the thermal treatment salt bath technological process, guaranteed the inner quality of quenching part, increased effective working, saved power consumption, improved working conditions, reduce environmental pollution, promote the use of industrial being easy to.
Description
The present invention is the thermal treatment salt bath furnace salt that is used to prevent the workpiece oxidation and decarbonization.
The salt bath heating is the main method that China quenches and heats, and abroad also in a large amount of uses, prevents that the workpiece oxidation and decarbonization from being to be difficult to the thorough problem that solves both at home and abroad for a long time always.Regular killing is all adopted in salt bath heating at present, carries out the deoxidation slag making, generally is to drag for primary slag in 8 hours.This working method, labor condition is poor, waste man-hour, increase electric power and the consumption of salt, and deoxidation is not thorough, influences quality product.The workpiece decarburization is required tight especially middle thermohaline, and the cyanogen salt deoxidation of also using severe toxicity that has causes environmental pollution.Through document data-searching, it is close to look into russian patent Su-533646 and the present invention, but its reductor is to adopt magnesium fluoride+boron amorphous, cost height, particularly boron amorphous, and the price height, the source is few, applies in industrial being difficult to.
For realizing not oxidation and decarbonization of heated parts, guarantee the inner quality of quenching part, the present invention is according to the reduction principle, that sneaks into cheapness, ample supply and prompt delivery in halide salt holds effect reductor-dewatering borax and silicon carbide; And reforms on the salt system, has better solved salt bath and has added and pine for preventing the workpiece oxidation and decarbonization.
Salt bath furnace salt of the present invention is bariumchloride, sodium-chlor, Repone K and magnesium fluoride, the borax that adopts through processed, and silicon carbide is mixed with " normal-salt " and " high-content reductor salt " by a certain percentage.In addition, in the process of using this salt, also must add " the middle reductor " of the routine of forming by titanium dioxide, silico-calcium iron powder, bariumchloride.
Aforesaid salt bath furnace salt, under the use of high temperature (1100～1350 ℃) temperature, the composition of its " normal-salt " is mixed by bariumchloride, the magnesium fluoride less than 3%, 1～4% dewatering borax, 0.3～1% silicon carbide; " high-content reductor salt " by bariumchloride, the magnesium fluoride less than 6%, and the 1-5% dewatering borax, 0.5-2% silicon carbide is formed.Be used for replacing the warm liquid furnace salt of cyanogen salt deoxidation, use temperature is 650～900 ℃, and its " normal-salt " by sodium-chlor, 30% Repone K, and less than 1% magnesium fluoride, 0.3～0.6 silicon carbide, 1～4% dewatering borax is formed; " high-content reductor salt " consists of sodium-chlor, 30% Repone K, less than 1% magnesium fluoride, and 0.5～1% silicon carbide, 2～5% dewatering borax.
Using method: when salt bath furnace uses this salt at empty stove, directly add " normal-salt ", use and carry out deoxidation once with " middle reductor " after 3～4 days, add " high-content reductor salt " earlier two to three times after dragging for slag, continue later on to add " normal-salt ", use so repeatedly, can prevent the workpiece oxidation and decarbonization.When dress uses this salt with the liquid furnace of old salt, earlier to old salt deoxidation once, add " high-content reductor salt " earlier three to five times after dragging for slag, add " normal-salt " later on again with " middle reductor ", use the method for this salt the same with empty stove, can realize not oxidation and decarbonization of work.
Compare with salt with the past liquid furnace, this salt will be held the effect reductor and sneak in the salt, reform liquid furnace salt system, prevented the oxidized decarburization of heated parts, fully guaranteed quenching part quality, dragging for the slag number of times significantly reduces, reduced labour intensity, increased effective working, saved power consumption And and can replace cyanide salt, eliminated severe toxicity and pollute.In addition, this salt cost is low, compares with Soviet Union Su-533646 patent, and the reductor cost only is its 1/10～1/20.Be easy to apply industrial.
Embodiment:
Preparation thermal treatment high temperature liquid furnace salt, generation oxidation and decarbonization when preventing the speedy steel cutting-tool heating.
" normal-salt " had been the mixing salt of normal contents both, was a kind of mixture that comprises following composition:
1000 kilograms in dehydration bariumchloride powder
5～30 kilograms of magnesium fluoride powders (technical pure)
4～10 kilograms in silicon carbide (170～220 order)
20～40 kilograms in dewatering borax powder (technical pure)
" high-content reductor salt " is a kind of mixture that comprises following composition:
1000 kilograms in dehydration bariumchloride powder
10～60 kilograms of magnesium fluoride powders (technical pure)
8～20 kilograms in silicon carbide (170～220 order)
40～80 kilograms in dewatering borax powder (technical pure)
" normal-salt " and " high-content reductor salt " all mixes the double-layer plastic bag of packing into after stirring is spared, in case the moisture absorption.
Using method: " normal-salt " put into salt stove burner hearth, and energising starts, and when salt melts fully, adds workpiece behind the temperature-stable and heats.Can add " normal-salt " at any time after the salt consumption, need not dry during with salt.Salt bath used after three days, added " middle reductor " slag making, added " high-content reductor salt " earlier 2～3 times after dragging for slag, continued to add " normal-salt " again.Add salt so repeatedly, can prevent the cutter oxidation and decarbonization that heats.
Claims (4)
1, a kind of medium and high temperature salt bath furnace salt based on halide salt, feature of the present invention are described salt and hold effect reductor-dewatering borax and be mixed in proportion " normal-salt " and " high-content reductor salt " with silicon carbide.
2, by the described High Temperature Salt Bath Furnace salt of claim 1, it is characterized in that said " normal-salt " by 100% bariumchloride, less than 3% magnesium fluoride, 1～4% dewatering borax, 0.3～1% silicon carbide is formed; " high-content reductor salt " by 100% bariumchloride, less than 6% magnesium fluoride, and 1～5% dewatering borax, 0.5～2% silicon carbide is formed.Use temperature is 1100～1350 ℃.
3, by claim 1 described in thermohaline liquid furnace salt, it is characterized in that said " normal-salt ", by 70% sodium-chlor, 30% Repone K, less than 1% magnesium fluoride, 0.3～0.6% silicon carbide, 1～4% dewatering borax composition; " high-content reductor salt " is by 70% sodium-chlor, 30% Repone K, form less than 1% magnesium fluoride, 0.5～1% silicon carbide, 2～5% dewatering borax.Use temperature is 650～900 ℃.
4, according to claim 1,2,3 described medium and high temperature salt bath furnace salt, when it is characterized in that using this salt, directly add " normal-salt ", treat that salt melts fully, behind the temperature-stable, the reheat workpiece is added " normal-salt " And according to the consumption of salt and is carried out the deoxidation slag making with conventional " middle reductor ", adds " high-content reductor salt " again after dragging for slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100155 CN85100155A (en) | 1985-04-02 | 1985-04-02 | The salt bath furnace salt of anti-oxidation decarburizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100155 CN85100155A (en) | 1985-04-02 | 1985-04-02 | The salt bath furnace salt of anti-oxidation decarburizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85100155A true CN85100155A (en) | 1986-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85100155 Pending CN85100155A (en) | 1985-04-02 | 1985-04-02 | The salt bath furnace salt of anti-oxidation decarburizing |
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| CN (1) | CN85100155A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244982A (en) * | 2016-08-23 | 2016-12-21 | 吴忠仪表有限责任公司 | A kind of process the rare earth salt bath of austenitic stainless steel and preparation method and application for low temperature nitride |
| CN107858487A (en) * | 2017-11-08 | 2018-03-30 | 蚌埠市华鼎机械科技有限公司 | A kind of quenching technical of steel component |
| CN107858489A (en) * | 2017-11-08 | 2018-03-30 | 蚌埠市华鼎机械科技有限公司 | A kind of high-quality quenching medium |
| CN111041167A (en) * | 2020-01-17 | 2020-04-21 | 山西百一机械设备制造有限公司 | High-temperature salt bath furnace deoxidizer and deoxidation method thereof |
-
1985
- 1985-04-02 CN CN 85100155 patent/CN85100155A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244982A (en) * | 2016-08-23 | 2016-12-21 | 吴忠仪表有限责任公司 | A kind of process the rare earth salt bath of austenitic stainless steel and preparation method and application for low temperature nitride |
| CN106244982B (en) * | 2016-08-23 | 2018-09-14 | 吴忠仪表有限责任公司 | A kind of rare earth salt bath and preparation method and application for low temperature nitride processing austenitic stainless steel |
| CN107858487A (en) * | 2017-11-08 | 2018-03-30 | 蚌埠市华鼎机械科技有限公司 | A kind of quenching technical of steel component |
| CN107858489A (en) * | 2017-11-08 | 2018-03-30 | 蚌埠市华鼎机械科技有限公司 | A kind of high-quality quenching medium |
| CN111041167A (en) * | 2020-01-17 | 2020-04-21 | 山西百一机械设备制造有限公司 | High-temperature salt bath furnace deoxidizer and deoxidation method thereof |
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