CN103361598A - Granular fast boro-carbonization agent - Google Patents
Granular fast boro-carbonization agent Download PDFInfo
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- CN103361598A CN103361598A CN2013103313465A CN201310331346A CN103361598A CN 103361598 A CN103361598 A CN 103361598A CN 2013103313465 A CN2013103313465 A CN 2013103313465A CN 201310331346 A CN201310331346 A CN 201310331346A CN 103361598 A CN103361598 A CN 103361598A
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- boro
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Abstract
The invention relates to a granular fast boro-carbonization agent. The granular fast boro-carbonization agent is characterized by comprising 14wt% of boron carbide, 25wt% of charcoal, 10wt% of sodium fluoborate, 4% of sodium carbonate and 47% of graphite. The above raw materials are processed into particles by loess as a binder so that use is convenient and dust pollution is reduced. The granular fast boro-carbonization agent has a fast boro-carbonization rate, can produce a thick and crisp boro-carbonization layer, can be widely used for chemical heat treatment on low and medium carbon steel and alloy steel and can obviously improve steel surface hardness and wear resistance.
Description
Technical field
The invention belongs to the thermo-chemical treatment technical field, relate to a kind of chemical treatment carburizer, particularly a kind of granular quick Boro-carburizing penetration enhancer.
Background technology
Chemical treatment carburizer is mainly used in surface of steel workpiece is infiltrated other element to change its surperficial chemical ingredients and tissue, to reach the purpose of improving the workpiece performance.When the mould such as needs process that the ask for something surface hardness is high, wear-resisting, shock resistance, heat-resisting workpiece such as various stretching, extruding, tube drawing, punching and when requiring the product such as wear-resisting all kinds of stock moulds, ore deposit machine part, farm machinery parts, use the prior art boronising to process, because infiltration rate is slow and infiltration layer is shallow, surface brittleness is large, anti-collision performance is poor, and the reasons such as processing soft steel effect is bad cause workpiece short work-ing life, do not reach desired performance.Thereby the life-span that will further improve iron and steel parts, thereby need further to increase the thickness of infiltration layer, the carbon content of raising infiltration layer further to improve tissue and the performance of its infiltration layer.
Summary of the invention
The objective of the invention is for overcoming the above-mentioned shortcoming of prior art chemical treatment carburizer, a kind of infiltration rate is fast, infiltration layer is thick, surperficial both granular quick Boro-carburizing penetration enhancers good with the matrix associativity of boronising carburizing and provide.
For achieving the above object, the present invention adopts following technical proposals:
Granular quick Boro-carburizing penetration enhancer of the present invention is characterized in that: it be by 〉=500 purpose norbides, 〉=200 purpose charcoals, Sodium tetrafluoroborate, yellow soda ash, Graphite Powder 99 are formulated according to following weight per-cent:
Norbide: 14%; Charcoal: 25%; Sodium tetrafluoroborate: 10%; Yellow soda ash: 4%; Graphite Powder 99: 47%.
Add in addition again after these raw materials are taken by weighing by its weight percent 7% 〉=100 purpose loess put into together flat rotating stirrer and stir; after stirring again with stirring 6% the water that is equivalent to the above-mentioned raw materials gross weight with being spilled into; be stirred to humidity when even; making granularity with the feed granulator of the transformation of the way is 2.5～3.5 millimeters particle; then dry or in 120 ℃ of oven dry, thereby make granular quick Boro-carburizing penetration enhancer easy to use.Will be loaded on cover during storage has the interior or interior preservation of other moistureproof encloses container of woven bag of plastics bag.
First above-mentioned penetration enhancer is sprinkled into during use and oozes the case bottom, about 15 millimeters of spreading thickness, put into the heat treated workpiece of wish, penetration enhancer is filled up on around the workpiece and top again, buckles enclosing cover after covering inner cover plate again, then with the sealing of water glass yellow mud, install and ooze the case fed to boiler, be heated to 870～900 ℃ of insulations 5～6 hours, the air cooling of coming out of the stove causes below 100 ℃ and workpiece can be clawed, alloying layer thickness reaches 0.27～0.45 millimeter, and the boron in the infiltration layer and iron consist of Fe
2The B single phase structure quenches after quenching or normalizing again, namely obtains the workpiece of required surface hardness or other performance.
The invention has the advantages that the Boro-carburizing layer except the hardness with boronising floor height, again owing to the infiltration that carbon is arranged makes transition layer toughness better, thereby reduced the fragility of infiltration layer, make workpiece surface not only wear-resisting, shock-resistant but also incrust.This penetration enhancer has reduced the consumption of norbide, thereby has reduced the cost of penetration enhancer owing to contain the charcoal that more carburizing is used.Because this penetration enhancer is particulate state, not only convenient use but also the difficult dust pollution that forms.This Boro-carburizing penetration enhancer is except the thermo-chemical treatment as middle, high-carbon and steel alloy thereof, can mainly be used as the thermo-chemical treatment of low-carbon (LC) and low-carbon alloy steel, can significantly improve surface hardness and other performance of this class steel, adopt this penetration enhancer to require the workpiece of surface abrasion resistance such as the products such as ore deposit machine part, farm machinery parts to carry out thermo-chemical treatment to the moulds such as stretching die, welding bell, punching mould, stock mould and other, the above-mentioned workpiece life-span is improved greatly, cost performance is high, and practical value is large.
Claims (1)
1. granular quick Boro-carburizing penetration enhancer is characterized in that: it be by 〉=500 purpose norbides, 〉=200 purpose charcoals, Sodium tetrafluoroborate, yellow soda ash, Graphite Powder 99 are formulated according to following weight per-cent:
Norbide: 14%; Charcoal: 25%; Sodium tetrafluoroborate: 10%; Yellow soda ash: 4%; Graphite Powder 99: 47%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103313465A CN103361598A (en) | 2013-07-26 | 2013-07-26 | Granular fast boro-carbonization agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103313465A CN103361598A (en) | 2013-07-26 | 2013-07-26 | Granular fast boro-carbonization agent |
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| Publication Number | Publication Date |
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| CN103361598A true CN103361598A (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103313465A Pending CN103361598A (en) | 2013-07-26 | 2013-07-26 | Granular fast boro-carbonization agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172493A (en) * | 2019-12-24 | 2020-05-19 | 江苏大学 | Boron-carbon co-cementation method for improving wear resistance of martensitic stainless steel |
Citations (5)
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|---|---|---|---|---|
| CN1093124A (en) * | 1993-03-30 | 1994-10-05 | 山东工业大学 | Borax-graphite type granular boronizing agent |
| CN101323944A (en) * | 2008-06-16 | 2008-12-17 | 江阴市鑫宏科技有限公司 | Boro-carburizing microalloying method of shearer cutter |
| CN101906605A (en) * | 2009-06-05 | 2010-12-08 | 清华大学 | Method for implanting boron nitride special ceramic on surface of corrugator roll |
| UA99562C2 (en) * | 2011-07-27 | 2012-08-27 | Днепропетровский Национальный Университет Имени Олеся Гончара | Method for saturation of steel products with boron and carbon |
| CN102703853A (en) * | 2012-06-12 | 2012-10-03 | 南京航空航天大学 | Surface strengthening method for titanium alloy |
-
2013
- 2013-07-26 CN CN2013103313465A patent/CN103361598A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093124A (en) * | 1993-03-30 | 1994-10-05 | 山东工业大学 | Borax-graphite type granular boronizing agent |
| CN101323944A (en) * | 2008-06-16 | 2008-12-17 | 江阴市鑫宏科技有限公司 | Boro-carburizing microalloying method of shearer cutter |
| CN101906605A (en) * | 2009-06-05 | 2010-12-08 | 清华大学 | Method for implanting boron nitride special ceramic on surface of corrugator roll |
| UA99562C2 (en) * | 2011-07-27 | 2012-08-27 | Днепропетровский Национальный Университет Имени Олеся Гончара | Method for saturation of steel products with boron and carbon |
| CN102703853A (en) * | 2012-06-12 | 2012-10-03 | 南京航空航天大学 | Surface strengthening method for titanium alloy |
Non-Patent Citations (1)
| Title |
|---|
| 谢建新等主编: "《标准金相图谱与最新热处理技术标准实用手册》", 31 December 2003, 新星出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172493A (en) * | 2019-12-24 | 2020-05-19 | 江苏大学 | Boron-carbon co-cementation method for improving wear resistance of martensitic stainless steel |
| CN111172493B (en) * | 2019-12-24 | 2021-10-12 | 江苏大学 | Boron-carbon co-cementation method for improving wear resistance of martensitic stainless steel |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131023 |