CN102747207A - High-nickel austenite nodular cast iron heat treatment oxidation prevention process - Google Patents
High-nickel austenite nodular cast iron heat treatment oxidation prevention process Download PDFInfo
- Publication number
- CN102747207A CN102747207A CN2012102426565A CN201210242656A CN102747207A CN 102747207 A CN102747207 A CN 102747207A CN 2012102426565 A CN2012102426565 A CN 2012102426565A CN 201210242656 A CN201210242656 A CN 201210242656A CN 102747207 A CN102747207 A CN 102747207A
- Authority
- CN
- China
- Prior art keywords
- cast iron
- heat treatment
- nodular cast
- nickel austenite
- austenite nodular
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a high-nickel austenite nodular cast iron heat treatment oxidation prevention process. The heat treatment temperature is 950 to 1200 DEG C. the process is characterized in that firstly, cast iron chips are used for covering the surface of a high-nickel austenite nodular cast iron casting, and then, the high-nickel austenite nodular cast iron casting is sent into a furnace to be subjected to heat treatment. Compared with the traditional oxidation prevention method, the oxidation prevention process provided by the invention has the advantages that a reduction production layer is formed on the surface of the casting by the cast iron chips, the casting is prevented from being oxidized during the high-temperature heat treatment, and the fast cooling requirement of the casing after the heat treatment and furnace discharge can also be met, so higher material performance can be obtained, the heat treatment advantages can be sufficiently realized, the raw materials of the process can be easily obtained, the cost is low, the operation is simple, the requirement on heat treatment equipment is low, and the popularization is very easy.
Description
Technical field
The invention belongs to high-nickel austenite nodular cast iron thermal treatment field, the anti-oxidation technology of high-nickel austenite nodular cast iron when being specifically related to thermal treatment.
Background technology
Along with the attention of the mankind to environment protection; The development of automotive engineering must adapt to human to environmental protection requirement; The high-power engine demand of little discharge capacity heightens; Strong thermo-resistant material (like high-nickel austenite nodular cast iron) widespread use in mover, and part casting heat-resistant material component need carry out necessary thermal treatment and improve performance.But singularity of high-nickel austenite nodular cast iron thermal treatment process (cold soon after 950 ℃～1200 ℃ insulations) and bigger batch and physical dimension make it can not adopt advanced treatment facility to heat-treat, and use at present is the high temperature car type furnace widely.Car type furnace has satisfied its singularity and big in batches requirement, but the problem of high temperature oxidation but is difficult for solving.Anti-oxidation scheme originally: 1. aluminum oxide covers, but effective can not satisfy cold soon; 2. zirconium white coating dip coating protects not thoroughly, and cost is high; 3. dropping reducing gas, the furnace sealing performance is not good, and protection effect is inhomogeneous, and the protection of inner chamber class inner cavity of component effect is poor.Therefore the problem of bringing is: can only adopt the thermal treatment process of low temperature slow cooling, the high-temperature behavior of product can not normally be brought into play, and seriously reduces the work-ing life of product.
Summary of the invention
The objective of the invention is to solve the problem of high-nickel austenite nodular cast iron oxidation when high temperature (950 ℃～1200 ℃) thermal treatment, a kind of simple to operate, anti-oxidation technology of high-nickel austenite nodular cast iron thermal treatment that cost is low is provided.
The present invention realizes that technical scheme that above-mentioned purpose adopts is following:
The anti-oxidation technology of high-nickel austenite nodular cast iron thermal treatment, thermal treatment temp are 950～1200 ℃, and its characteristics are that first cylinder iron iron filings cover the surface of high-nickel austenite nodular cast iron foundry goods, send in the stove and heat-treat.
High-nickel austenite nodular cast iron foundry goods with inner chamber is before thermal treatment, and cylinder iron iron filings are filled with the inner chamber of foundry goods.
Cast iron filing is the machining waste material of cast prod, shape preferred powder powder.
Compare traditional aluminum oxide covering method and zirconium white dip-coating method, anti-oxidation technology of the present invention is to form restitutive protection's layer by cast iron filing at cast(ing) surface, can guarantee that not only foundry goods is not oxidized when high-temperature heat treatment; Can also satisfy comes out of the stove after the heat treating castings carries out quick refrigerative requirement; Thereby obtain higher material property, this technology cost is low, simple to operate; Be highly susceptible to promoting, can give full play to heat treated advantage.
Compare the method for traditional dropping reducing gas, this technology requires low to HTFX, uniform processing environment can be provided, and better guarantees the effect of handling.
Compare traditional various anti-oxidation way, the raw material that this technology is used is easy to obtain, and can save resource greatly, meets the environmental protection policy of country, helps large-scale promotion.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1
Common process is adopted in the thermal treatment of high-nickel austenite nodular cast iron foundry goods, and different is, evenly spreads the thick Powdered cast iron filing of 3～5mm in thermal treatment charging basket bottom earlier; Foundry goods is placed on the cast iron filing; Cover one deck cast iron filing again at cast(ing) surface again, core cavity cylinder iron iron filings is filled with, and then the thermal treatment charging basket is stacked on the chassis; Send into car type furnace, under 950～1200 ℃, heat-treat.
Claims (1)
1. the anti-oxidation technology of high-nickel austenite nodular cast iron thermal treatment, thermal treatment temp is 950～1200 ℃, it is characterized in that, cylinder iron iron filings cover the surface of high-nickel austenite nodular cast iron foundry goods earlier, send in the stove and heat-treat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102426565A CN102747207A (en) | 2012-07-13 | 2012-07-13 | High-nickel austenite nodular cast iron heat treatment oxidation prevention process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102426565A CN102747207A (en) | 2012-07-13 | 2012-07-13 | High-nickel austenite nodular cast iron heat treatment oxidation prevention process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102747207A true CN102747207A (en) | 2012-10-24 |
Family
ID=47027694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102426565A Pending CN102747207A (en) | 2012-07-13 | 2012-07-13 | High-nickel austenite nodular cast iron heat treatment oxidation prevention process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102747207A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299306A (en) * | 2017-07-20 | 2017-10-27 | 首钢集团有限公司 | A kind of method of medium managese steel hot-dip |
| CN113510075A (en) * | 2021-09-13 | 2021-10-19 | 徐州鸿誉环境科技有限公司 | Metal fragment transportation and classification vehicle based on austenite cold phase transformation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125264A (en) * | 1994-12-19 | 1996-06-26 | 王希太 | Nodular graphite cast iron spheroidization process for reducing fire loss and saving alloy |
| CN1923412A (en) * | 2006-09-25 | 2007-03-07 | 西峡县内燃机进排气管有限责任公司 | High nickel austenite spheroidal graphite cast-iron gas exhaust branch pipe casting technique |
| CN1962127A (en) * | 2006-12-11 | 2007-05-16 | 王惠民 | Nano iron powder dedicated for metallic glass |
| CN101168190A (en) * | 2007-10-11 | 2008-04-30 | 丁家伟 | Hard alloy and double-metal composite technique and device |
| CN101537427A (en) * | 2009-04-28 | 2009-09-23 | 江苏环立板带轧辊有限公司 | Composite roll for centrifugally casting high-chromium cast iron and a preparation method thereof |
-
2012
- 2012-07-13 CN CN2012102426565A patent/CN102747207A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125264A (en) * | 1994-12-19 | 1996-06-26 | 王希太 | Nodular graphite cast iron spheroidization process for reducing fire loss and saving alloy |
| CN1923412A (en) * | 2006-09-25 | 2007-03-07 | 西峡县内燃机进排气管有限责任公司 | High nickel austenite spheroidal graphite cast-iron gas exhaust branch pipe casting technique |
| CN1962127A (en) * | 2006-12-11 | 2007-05-16 | 王惠民 | Nano iron powder dedicated for metallic glass |
| CN101168190A (en) * | 2007-10-11 | 2008-04-30 | 丁家伟 | Hard alloy and double-metal composite technique and device |
| CN101537427A (en) * | 2009-04-28 | 2009-09-23 | 江苏环立板带轧辊有限公司 | Composite roll for centrifugally casting high-chromium cast iron and a preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299306A (en) * | 2017-07-20 | 2017-10-27 | 首钢集团有限公司 | A kind of method of medium managese steel hot-dip |
| CN107299306B (en) * | 2017-07-20 | 2019-10-29 | 首钢集团有限公司 | A kind of method of medium managese steel hot-dip |
| CN113510075A (en) * | 2021-09-13 | 2021-10-19 | 徐州鸿誉环境科技有限公司 | Metal fragment transportation and classification vehicle based on austenite cold phase transformation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103820704B (en) | Form in High Nickel Austenite Nodular Cast Iron material of vehicle turbine housing and preparation method thereof | |
| CN104002112B (en) | Method for machining die | |
| CN102276275A (en) | Method for producing magnesium carbon bricks by using microwave heating technology | |
| CN102690940A (en) | Technological method for heat treatment of stainless steel bearing | |
| CN109811156A (en) | A kind of casting method of high tough aluminium alloy | |
| CN102747207A (en) | High-nickel austenite nodular cast iron heat treatment oxidation prevention process | |
| CN103357865B (en) | A kind of enhancing mixes titanium powder metallurgical material and preparation method thereof | |
| CN101837617A (en) | Gel curing processing method of epoxy resin | |
| CN102399951A (en) | Vacuum heat treatment process of soft magnetic alloy | |
| CN103846634A (en) | Method for forging single-throw crank shaft | |
| CN104630603A (en) | Iron-chromium-aluminum alloy manufacturing technology | |
| CN103805826A (en) | NdFeB iron-based multiphase material sintering technology | |
| CN101560633A (en) | Technical method for producing heat-resisting alloy steel casting below 1000 DEG C | |
| CN104232856A (en) | Annealing method for electromagnetic pure iron | |
| CN101912936A (en) | Cooling method of forging subjected to heat treatment | |
| CN108588502A (en) | A kind of preparation method of aluminium alloy extrusions | |
| CN105603165A (en) | 42CrMo steel heat treatment process | |
| CN103436764B (en) | For the processing method of the refractory alloy steel casting of less than 1100 DEG C | |
| CN103409775B (en) | A kind of method of electrolysis production aluminum titanium alloy | |
| CN105772641A (en) | Casting method for valve body of one-way valve | |
| CN101560635B (en) | Technical method for producing heat-resisting alloy steel casting below 1100 DEG C | |
| CN101560626A (en) | Technical method for producing heat-resisting alloy steel casting below 1200 DEG C | |
| CN101705346B (en) | Heat treatment method for improving hardness of ZG270-500 eccentric body | |
| CN104985142A (en) | High-nickel austenite nodular cast iron spheroidizing method and spheroidizing ladle | |
| CN101798621B (en) | Sphere seat softening process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121024 |