CN103045992A - Solid nitriding agent - Google Patents
Solid nitriding agent Download PDFInfo
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- CN103045992A CN103045992A CN2012105327824A CN201210532782A CN103045992A CN 103045992 A CN103045992 A CN 103045992A CN 2012105327824 A CN2012105327824 A CN 2012105327824A CN 201210532782 A CN201210532782 A CN 201210532782A CN 103045992 A CN103045992 A CN 103045992A
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- nitriding
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Abstract
The invention relates to a solid nitriding agent which is characterized by being prepared from the following raw materials in percentage by weight: 35% of urea, 5% of ammonium bicarbonate, 10% of charcoal (larger than or equal to 100 meshes) and 50% of graphite. In the nitriding agent, urea is a nitrogen supply agent, ammonium bicarbonate is an activator, charcoal is an oxygen absorption and energizing agent, and graphite is a filing agent. The nitriding agent provided by the invention has the advantages of wide source of raw materials, low price, simple nitriding equipment, high speed and thick nitriding layer, can be widely applied to the thermo-chemical treatment of carbon steel, medium and low-alloy steel and tool and mould steel, is particularly suitable for the nitriding of a single small-batch product workpiece, and has a great practical value.
Description
Technical field
The invention belongs to the thermo-chemical treatment technical field, relate to a kind of chemical treatment carburizer, relate in particular to a kind of pack nitriding medium.
Background technology
When thermo-chemical treatment is mainly used in that metallic substance and part carried out thermo-chemical treatment to change its surperficial chemical ingredients and tissue, to reach the purpose that improves its performance.When needs are processed on the basis of the existing conditions no matter how simple and crude some single and mini-batch productions and required distortion is little, surface hardness is high, wear-resisting, anti-corrosion, heat-resisting product workpiece such as when plastic film, transfer mold, stretched film, punching mould, axle and agricultural sieve series products, use existing nitridation technique to process, all need expensive nitriding (nitrogenize) equipment, current consumption is large, the thermal treatment expense is high, is not suitable for Single unit job lot production.
Summary of the invention
The objective of the invention is for overcoming the above-mentioned shortcoming of existing nitridation technique, and a kind of pack nitriding medium that raw material sources are wide, cost is low, required equipment is simple, infiltration rate is fast, performance is good that is applicable to Single unit job lot production is provided.
For achieving the above object, the present invention takes following technical proposals:
Pack nitriding medium of the present invention is characterized in that: it is formulated according to following weight per-cent by raw material urea, bicarbonate of ammonia, charcoal (〉=100 order), graphite:
Urea: 35%; Bicarbonate of ammonia: 5%; Charcoal: 10%; Graphite: 50%.
Urea is for supplying the nitrogen agent in the above-mentioned raw materials, and bicarbonate of ammonia is activator, and charcoal is oxygen uptake and energizer, and graphite is weighting agent.Adding 8% loess (〉=100 order) after these raw materials are taken by weighing by its weight percent puts into together stirrer and stirs again; it is rear with stirring with being spilled into (5～10) the % water that is equivalent to the above-mentioned raw materials gross weight to stir; be stirred to humidity when even, making granularity with granulator is 3～4 millimeters particle.In view of the very fast volatilization about 60 ℃ time of the bicarbonate of ammonia in the penetration enhancer, the penetration enhancer particle dry or dry after in 50 ℃ of slow temperature oven dry, thereby make granular solids nitriding medium easy to use.Be anti-moisture absorption, penetration enhancer should be loaded on woven bag or the interior preservation of other container that cover has plastic inner bag.
Above-mentioned pack nitriding medium packed into ooze case, imbed the workpiece of wanting nitriding, add a cover and be heated to 520～560 ℃ of insulations 4～8 hours with entering box-type furnace or other conventional, electric-resistance stove after the clay mud sealing, after coming out of the stove workpiece is taken out oil cooling from oozing in the case, infiltration layer can reach 0.10～0.15 millimeter, thereby obtains the workpiece of required hardness and other performance.
The raw material sources that the invention has the advantages that the preparation penetration enhancer are wide, price is low, nitriding is simple with equipment, nitriding temperature is low, with low cost when being used for the nitriding of single and mini-batch production product workpiece, this penetration enhancer nitriding speed is fast, infiltration layer is thick, can be widely used in to carbon steel and in, the thermo-chemical treatment of low alloy steel and mould steel, can improve the performances such as wear-resisting, anti-corrosion, red hardness, hot strength, antifatigue and thermal fatigue of workpiece.Utilize this penetration enhancer that plastic film, non-ferrous metal transfer mold, stretched film, cold-punching mould, blanking die, high quality steel cutter cutlery, axle and agricultural sieve series products are carried out nitriding, can significantly improve the life-span of this class workpiece, cost performance is high, and practical value is huge.
Claims (1)
1. pack nitriding medium is characterized in that: it be by raw material urea, bicarbonate of ammonia, 〉=100 purpose charcoals, graphite are formulated according to following weight per-cent:
Urea: 35%; Bicarbonate of ammonia: 5%; Charcoal: 10%; Graphite: 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532782.4A CN103045992B (en) | 2012-12-12 | 2012-12-12 | Solid nitriding agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532782.4A CN103045992B (en) | 2012-12-12 | 2012-12-12 | Solid nitriding agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103045992A true CN103045992A (en) | 2013-04-17 |
| CN103045992B CN103045992B (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210532782.4A Expired - Fee Related CN103045992B (en) | 2012-12-12 | 2012-12-12 | Solid nitriding agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN103045992B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741092A (en) * | 2013-12-12 | 2014-04-23 | 辽宁工业大学 | Electric pulse-assisted nitriding method of austenitic stainless steel |
| CN105525255A (en) * | 2015-12-17 | 2016-04-27 | 常州大学 | Fast and efficient aluminum-silicon-nitrogen composite permeating technology for steel |
| CN111235519A (en) * | 2020-03-20 | 2020-06-05 | 上海樱侬科技股份有限公司 | Surface treatment method for improving surface wear resistance of eccentric shaft part |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748356A (en) * | 2010-01-12 | 2010-06-23 | 张云江 | Economical boriding_nitrocarburizing agent |
-
2012
- 2012-12-12 CN CN201210532782.4A patent/CN103045992B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748356A (en) * | 2010-01-12 | 2010-06-23 | 张云江 | Economical boriding_nitrocarburizing agent |
Non-Patent Citations (1)
| Title |
|---|
| 宋涛 等编: "《热处理工工作手册》", 30 September 2007, 北京：化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741092A (en) * | 2013-12-12 | 2014-04-23 | 辽宁工业大学 | Electric pulse-assisted nitriding method of austenitic stainless steel |
| CN103741092B (en) * | 2013-12-12 | 2016-01-20 | 辽宁工业大学 | A kind of electricimpulse of austenitic stainless steel assists nitriding method |
| CN105525255A (en) * | 2015-12-17 | 2016-04-27 | 常州大学 | Fast and efficient aluminum-silicon-nitrogen composite permeating technology for steel |
| CN111235519A (en) * | 2020-03-20 | 2020-06-05 | 上海樱侬科技股份有限公司 | Surface treatment method for improving surface wear resistance of eccentric shaft part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103045992B (en) | 2014-12-03 |
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