CN105132655B - The manufacture method of automobile exhaust system ferritic stainless steel - Google Patents
The manufacture method of automobile exhaust system ferritic stainless steel Download PDFInfo
- Publication number
- CN105132655B CN105132655B CN201510584901.4A CN201510584901A CN105132655B CN 105132655 B CN105132655 B CN 105132655B CN 201510584901 A CN201510584901 A CN 201510584901A CN 105132655 B CN105132655 B CN 105132655B
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- wire rod
- steel wire
- epithelium
- manufacture method
- 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.)
- Active
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of manufacture method of automobile exhaust system ferritic stainless steel, comprise the following steps：1）Epithelium processing is carried out to the mm of Ф 13.0 stainless steel wire rod surface, the stainless steel wire rod of the Ф 13.0mm is mainly made up of the alloying element of following percentage by weight：C≤0.025%, Si≤0.75%, Mn≤0.50%, P≤0.025%, S≤0.005%, Cr11.0 ~ 11.5%, Ni0.50 ~ 1.00%, Mo≤0.50%, Cu≤0.50%, N≤0.04%, Nb≤0.05%, Ti≤0.02%, surplus are Fe and inevitable impurity；2）Drying；3）Drawing；4）Surface cleaning；5）Online bright annealing；6）End product drawing：Obtain Ф 9.80mm finished product；The ferritic stainless steel surface-brightening that manufacture method of the present invention is obtained, there is no black yellow line, draw trace, crackle, fold, stick up the defects such as skin, its grain size number is 7.5 grades, tensile strength is 565 ~ 690MPa, elongation percentage is that 22 ~ 28%, HRB hardness is 70 ~ 90, with excellent corrosion resisting property, high-temperature behavior and mechanical performance, the resisting salt fog corrosion time, the upper limit temperature of heat tolerance was up to 800 ~ 850 DEG C more than 110 hours.
Description
Technical field
The present invention relates to the manufacture method of stainless steel, specifically a kind of manufacture of automobile exhaust system ferritic stainless steel
Method.
Background technology
With the development that auto industry is maked rapid progress, higher requirement is proposed to the properties of automobile, but it is same with this
When, the requirement to automobile exhaust system is also improved constantly.The gas that the effect of automobile exhaust system will mainly be discharged from engine
Body sends into exhaust manifold, then successively through front tube, bellows, catalytic converter, auxiliary muffler, center tube, main noise reduction
Device is dredged, and is finally discharged from afterbody pipeline.The parts of automobile exhaust system are mainly made of stainless steel, and its parts is substantially
On be divided into hot junction and cold end by operating temperature, hot junction includes exhaust manifold, front tube, bellows and catalytic converter, work temperature
Degree is general at 600 DEG C -950 DEG C, therefore hot junction stainless steel mainly considers thermal fatigue resistance, elevated temperature strength and the high temperature of stainless steel
The high-temperature behaviors such as inoxidizability；Cold end includes auxiliary muffler, center tube, main muffler and afterbody pipeline, operating temperature phase
To relatively low, auxiliary muffler and center tube are generally 400 DEG C -600 DEG C, main muffler and afterbody pipeline be generally 100 DEG C -
400℃.Required it is considered that the decay resistance of cold end parts stainless steel is met, but as automobile exhaust pipe is used
Cold end parts are proposed higher by life-span and the lifting of delivery temperature with the decay resistance and high-temperature behavior of stainless steel
It is required that, for example, for improve the resistance to exhaust condensate corrosive nature of muffler, Japan exploitation successively develop SUH409L,
The anticorrosive stainless steel such as SUS430JIL, SUS436 and SUS436JIL is high although the decay resistance of these stainless steels is preferably
Warm poor-performing, it is difficult to meet the high-temperature behavior requirement of different automobile types and environment to gas extraction system cold end.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of manufacturer of automobile exhaust system ferritic stainless steel
Method, ferritic stainless steel made from this method has excellent corrosion resisting property, high-temperature behavior and mechanical performance concurrently.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：Automobile exhaust system ferritic stainless steel
Manufacture method, comprises the following steps：
1）Epithelium processing：The mm of Ф 13.0 stainless steel wire rod surface is carried out in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution
Epithelium processing, wherein, the stainless steel wire rod of the Ф 13.0mm is mainly made up of the alloying element of following percentage by weight：C≤
0.025%、Si≤0.75%、Mn≤0.50%、P≤0.025%、S≤0.005%、Cr11.0~11.5%、Ni0.50~1.00%、Mo≤
0.50%th, Cu≤0.50%, N≤0.04%, Nb≤0.05%, Ti≤0.02%, surplus are Fe and inevitable impurity；
2）Drying：Stainless steel wire rod after drying epithelium processing at a temperature of 100 ~ 200 DEG C, drying time is 30 ~ 50 points
Clock；
3）Drawing：Epithelium is handled and the stainless steel wire rod after drying is drawn in the mm of Ф 10.0, drawing process using drawing
Pull out powder lubrication；
4）Surface cleaning：Stainless steel wire rod after drawing is carried out what is contained in cathodic pickling, descaling bath in descaling bath
The concentration of sulfuric acid solution is 170 ~ 270 g/L, controls the Faradaic current of every wire rod in 20 A；
5）Online bright annealing：Stainless steel wire rod after surface cleaning carries out 820 ~ 880 DEG C of online bright annealing；
6）End product drawing：Stainless steel wire rod is drawn in the mm of Ф 9.80, drawing process and lubricated using drawing powder, is obtained
The mm of Ф 9.80 finished product.
Step 1）In the temperature of epithelium agent solution used be 80 ~ 110 DEG C, epithelium processing time is 10 ~ 50 minutes.
Step 1）In film agent used be the model PM-02 that this special wire drawing auxiliary agent Co., Ltd of Shijiazhuang provides production
Product, the proportion of epithelium agent solution is 1.10 ~ 1.15 g/cm3。
Step 5）In the annealing speed of online bright annealing be 0.5 ~ 3 m/min.
Step 3）With step 6）In drawing powder used be model that this special wire drawing auxiliary agent Co., Ltd of Shijiazhuang provides
NL303 or GB205 product.
Step 4）In the process of surface cleaning substituted by procedure below：By the stainless steel wire rod after drawing in alkaline bath
The concentration for carrying out the alkali lye of splendid attire in electrolytic alkaline cleaning, alkaline bath is 90 ~ 180 g/L, controls the Faradaic current of every wire rod 20
A, described alkali lye is formulated by least one of sodium hydroxide, sodium carbonate and tertiary sodium phosphate.
Compared with prior art, the advantage of the invention is that：The ferritic stainless steel that manufacture method of the present invention is obtained, surface
Light, without black yellow line, draws trace, crackle, folds, sticks up the defects such as skin, its grain size number is 7.5 grades, and tensile strength is 565 ~
690MPa, elongation percentage is that 22 ~ 28%, HRB hardness is 70 ~ 90, resistance to excellent corrosion resisting property, high-temperature behavior and mechanical performance
The salt air corrosion time, the upper limit temperature of heat tolerance was fully able to meet automobile exhaust system up to 800 ~ 850 DEG C more than 110 hours
The use requirement of cold end, and the use requirement in automobile exhaust system part hot junction can be met.
Brief description of the drawings
Fig. 1 is the metallograph of the mm stainless steel finished products of Ф 9.80 of embodiment 1.
Embodiment
The present invention is described in further detail with reference to embodiments.
The manufacture method of the automobile exhaust system ferritic stainless steel of embodiment 1, comprises the following steps：
1）Epithelium processing：The mm of Ф 13.0 stainless steel wire rod surface is carried out in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution
Epithelium processing, wherein, the stainless steel wire rod of the Ф 13.0mm is mainly made up of the alloying element of following percentage by weight：C
0.020 %、Si 0.43 %、Mn 0.37 %、P 0.019 %、S 0.002 %、Cr11.1 %、Ni 0.50 %、Mo 0.42 %、
0.02 0.01 0.009 % of %, Ti of %, Nb of %, N of Cu 0.44, surplus is Fe and inevitable impurity；Epithelium agent solution
Proportion be 1.10 ~ 1.15 g/cm3, the temperature of epithelium agent solution is 85 DEG C, and epithelium processing time is 45 minutes；
2）Drying：Stainless steel wire rod after drying epithelium processing at a temperature of 150 DEG C, drying time is 40 minutes；
3）Drawing：Epithelium is handled and the stainless steel wire rod after drying is drawn in the mm of Ф 10.0, drawing process using drawing
Pull out powder lubrication；
4）Surface cleaning：Stainless steel wire rod after drawing is carried out what is contained in cathodic pickling, descaling bath in descaling bath
The concentration of sulfuric acid solution is 200 g/L, controls the Faradaic current of every wire rod in 20 A；
5）Online bright annealing：Stainless steel wire rod after surface cleaning carries out 830 DEG C of online bright annealing, annealing speed
Spend for 1 m/min；
6）End product drawing：Stainless steel wire rod is drawn in the mm of Ф 9.80, drawing process and lubricated using drawing powder, is obtained
The mm of Ф 9.80 of embodiment 1 finished product, its metallograph is shown in Fig. 1.
The manufacture method of the automobile exhaust system ferritic stainless steel of embodiment 2, comprises the following steps：
1）Epithelium processing：The mm of Ф 13.0 stainless steel wire rod surface is carried out in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution
Epithelium processing, wherein, the stainless steel wire rod of the Ф 13.0mm is mainly made up of the alloying element of following percentage by weight：C
0.012 %、Si 0.22 %、Mn 0.19 %、P 0.011%、S 0.0015 %、Cr11.3%、Ni 0.79 %、Mo 0.26 %、
0.013 0.007 %, the Ti 0.012% of %, Nb of %, N of Cu 0.31, surplus is Fe and inevitable impurity；Film agent is molten
The proportion of liquid is 1.10 ~ 1.15 g/cm3, the temperature of epithelium agent solution is 95 DEG C, and epithelium processing time is 30 minutes；
2）Drying：Stainless steel wire rod after drying epithelium processing at a temperature of 120 DEG C, drying time is 35 minutes；
3）Drawing：Epithelium is handled and the stainless steel wire rod after drying is drawn in the mm of Ф 10.0, drawing process using drawing
Pull out powder lubrication；
4）Surface cleaning：Stainless steel wire rod after drawing is carried out what is contained in cathodic pickling, descaling bath in descaling bath
The concentration of sulfuric acid solution is 220 g/L, controls the Faradaic current of every wire rod in 20 A；
5）Online bright annealing：Stainless steel wire rod after surface cleaning carries out 850 DEG C of online bright annealing, annealing speed
Spend for 2 m/min；
6）End product drawing：Stainless steel wire rod is drawn in the mm of Ф 9.80, drawing process and lubricated using drawing powder, is obtained
The mm of Ф 9.80 of embodiment 2 finished product.
The manufacture method of the automobile exhaust system ferritic stainless steel of embodiment 3, comprises the following steps：
1）Epithelium processing：The mm of Ф 13.0 stainless steel wire rod surface is carried out in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution
Epithelium processing, wherein, the stainless steel wire rod of the Ф 13.0mm is mainly made up of the alloying element of following percentage by weight：C
0.010 %、Si 0.38 %、Mn 0.25 %、P 0.008 %、S 0.0024 %、Cr 11.4 %、Ni 0.92 %、Mo 0.18
0.009 %, the Nb 0.021% of %, N of %, Cu 0.29, the % of Ti 0.007, surplus is Fe and inevitable impurity；Film agent
The proportion of solution is 1.10 ~ 1.15 g/cm3, the temperature of epithelium agent solution is 100 DEG C, and epithelium processing time is 25 minutes；
2）Drying：Stainless steel wire rod after drying epithelium processing at a temperature of 135 DEG C, drying time is 30 minutes；
3）Drawing：Epithelium is handled and the stainless steel wire rod after drying is drawn in the mm of Ф 10.0, drawing process using drawing
Pull out powder lubrication；
4）Surface cleaning：Stainless steel wire rod after drawing is carried out what is contained in electrolytic alkaline cleaning, alkaline bath in alkaline bath
The concentration of alkali lye is 150 g/L, controls the Faradaic current of every wire rod in 20 A, alkali lye is formulated by sodium hydroxide.
5）Online bright annealing：Stainless steel wire rod after surface cleaning carries out 870 DEG C of online bright annealing, annealing speed
Spend for 1.5 m/min；
6）End product drawing：Stainless steel wire rod is drawn in the mm of Ф 9.80, drawing process and lubricated using drawing powder, is obtained
The mm of Ф 9.80 of embodiment 3 finished product.
In embodiments above, step 1）In film agent used can using Shijiazhuang this special hot candied auxiliary agent Co., Ltd
The model PM-02 of offer product, its main component is borax pentahydrate, potassium sulfate and glauber salt, and pH value is 7 ~ 9, is a kind of
The white particle alternate with brown.
In embodiments above, step 3）With step 6）In drawing powder used can using Shijiazhuang this special hot candied auxiliary agent
The product for the model NL303 that Co., Ltd provides, its Contents of Main Components is：It is the % of sodium hydroxide 0.6, the % of borax 33.8, hard
The % of resin acid sodium 63.8, other 1.8 %, the softening point of the drawing powder is 185 ~ 195 DEG C, and fat content is 80 ~ 85 %, and moisture content contains
Measure as 1 ~ 3 %, be a kind of white particle；Step 3）With step 6）In drawing powder used can also be helped using this special wire drawing of Shijiazhuang
The product for the model GB205 that agent Co., Ltd provides, its Contents of Main Components is：The % of calcium hydroxide 52, the % of fixed oil 27.5,
The % of titanium dioxide 6, other 14.5 %, the softening point of the drawing powder is 125 ~ 135 DEG C, and fat content is 42 ~ 47 %, water content
It is a kind of greyish white coloured particles for 1 ~ 3 %.
According to GB/T 10125《Artificial atmosphere corrosion test salt spray test》Detect the above-mentioned mm of Ф 9.80 stainless steel into
The salt spray corrosion resistance of product, after measured, during the resisting salt fog corrosion of above-described embodiment 1-3 mm of Ф 9.80 stainless steel finished product
Between more than 110 hours.
In addition, being also tested for the high-temperature behavior of above-described embodiment 1-3 mm of Ф 9.80 stainless steel finished product, test is found,
The upper limit temperature of heat tolerance of above-described embodiment 1-3 mm of Ф 9.80 stainless steel finished product is up to 800 ~ 850 DEG C.
Other performances of above-described embodiment 1-3 mm of Ф 9.80 stainless steel finished product are：Grain size number is 7.5 grades, is resisted
Tensile strength is 565 ~ 690MPa, and elongation percentage is that 22 ~ 28%, HRB hardness is 70 ~ 90.
Claims (4)
1. the manufacture method of automobile exhaust system ferritic stainless steel, it is characterised in that comprise the following steps：
1) epithelium is handled：Ф 13.0mm stainless steel wire rod surface is carried out at epithelium in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution
Reason, wherein, the stainless steel wire rod of the Ф 13.0mm is mainly made up of the alloying element of following percentage by weight：C≤0.025%,
Si≤0.75%, Mn≤0.50%, P≤0.025%, S≤0.005%, Cr11.0~11.5%, Ni0.50~1.00%, Mo
≤ 0.50%, Cu≤0.50%, N≤0.04%, Nb≤0.05%, Ti≤0.02%, surplus are Fe and inevitably miscellaneous
Matter；
2) dry：Stainless steel wire rod after drying epithelium processing at a temperature of 100~200 DEG C, drying time is 30~50 minutes；
3) drawing：Epithelium is handled and the stainless steel wire rod after drying is drawn in Ф 10.0mm, drawing process and uses drawing powder
Lubrication；
4) surface cleaning：The sulfuric acid that stainless steel wire rod after drawing is carried out containing in cathodic pickling, descaling bath in descaling bath
The concentration of solution is 170~270g/L, controls the Faradaic current of every wire rod in 20A；
5) online bright annealing：Stainless steel wire rod after surface cleaning carries out 820~880 DEG C of online bright annealing；
6) end product drawing：Stainless steel wire rod is drawn in Ф 9.80mm, drawing process and lubricated using drawing powder, Ф is obtained
9.80mm finished product；
Step 1) in film agent used be the model PM-02 that this special wire drawing auxiliary agent Co., Ltd of Shijiazhuang provides product, skin
The proportion of film solution is 1.10~1.15g/cm3；
Step 3) and step 6) in drawing powder used be model NL303 that this special wire drawing auxiliary agent Co., Ltd of Shijiazhuang provides or
GB205 product.
2. the manufacture method of automobile exhaust system ferritic stainless steel according to claim 1, it is characterised in that：Step
1) temperature of epithelium agent solution used is 80~110 DEG C in, and epithelium processing time is 10~50 minutes.
3. the manufacture method of automobile exhaust system ferritic stainless steel according to claim 1 or 2, it is characterised in that：
Step 5) in the annealing speed of online bright annealing be 0.5~3m/min.
4. the manufacture method of automobile exhaust system ferritic stainless steel according to claim 1 or 2, it is characterised in that：
Step 4) in the process of surface cleaning substituted by procedure below：Stainless steel wire rod after drawing is electrolysed in alkaline bath
The concentration of the alkali lye contained in alkali cleaning, alkaline bath is 90~180g/L, controls the Faradaic current of every wire rod in 20A, described
Alkali lye is formulated by least one of sodium hydroxide, sodium carbonate and tertiary sodium phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510584901.4A CN105132655B (en) | 2015-09-15 | 2015-09-15 | The manufacture method of automobile exhaust system ferritic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510584901.4A CN105132655B (en) | 2015-09-15 | 2015-09-15 | The manufacture method of automobile exhaust system ferritic stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105132655A CN105132655A (en) | 2015-12-09 |
| CN105132655B true CN105132655B (en) | 2017-10-27 |
Family
ID=54718220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510584901.4A Active CN105132655B (en) | 2015-09-15 | 2015-09-15 | The manufacture method of automobile exhaust system ferritic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105132655B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042235B (en) * | 2017-06-02 | 2018-07-27 | 江苏甬金金属科技有限公司 | The production method of very thin ferritic stainless steel band with glossy surface |
| CN108130491A (en) * | 2017-12-19 | 2018-06-08 | 浙江腾龙精线有限公司 | The processing method of engine fuel oil system rod iron |
| CN109261731B (en) * | 2018-08-24 | 2020-09-22 | 江阴康瑞成型技术科技有限公司 | Production process of corrosion-resistant anti-loosening stainless steel house nail line |
| CN109706402B (en) * | 2018-12-27 | 2020-12-25 | 浙江腾龙精线有限公司 | Preparation method of duplex stainless steel consumable electrode gas shielded welding wire |
| CN111069312B (en) * | 2019-12-25 | 2022-03-29 | 江阴法尔胜泓昇不锈钢制品有限公司 | Production process of low-magnetic austenitic stainless steel balance bar wire |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004337885A (en) * | 2003-05-14 | 2004-12-02 | Sanyo Special Steel Co Ltd | Manufacturing method for ferritic stainless steel wire excellent in cold workability |
| CN1817494A (en) * | 2006-01-10 | 2006-08-16 | 海城正昌工业有限公司 | Production of tin-coating control line |
| CN101288926A (en) * | 2007-04-20 | 2008-10-22 | 宝山钢铁股份有限公司 | Ferritic stainless steel wire rods for welding wire, welding wire and manufacturing method and application thereof |
| CN102828118B (en) * | 2012-09-13 | 2015-03-25 | 贝发集团股份有限公司 | Method for manufacturing free-cutting stainless steel wire for ball-point pen head |
-
2015
- 2015-09-15 CN CN201510584901.4A patent/CN105132655B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105132655A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105132655B (en) | The manufacture method of automobile exhaust system ferritic stainless steel | |
| CN106544494B (en) | A kind of online soft annealing method suitable for 1Cr17Ni2 stainless steel cold pull wires | |
| CN103627927A (en) | Titanium alloy extruded pipe or rolled pipe and preparation method thereof | |
| CN103695799B (en) | A kind of production technology of ultra-fine grain heat-resistance stainless steel seamless steel pipe | |
| CN103540796B (en) | A kind of titanium alloy (TC11) rolled pipe and preparation method thereof | |
| CN104862593B (en) | The preparation method of ferritic stainless seamless steel tube | |
| CN103667799A (en) | High-temperature alloy material and preparation method thereof | |
| CN105382173B (en) | A kind of gear drive head forging technology with bar portion | |
| CN104561651A (en) | Titanium alloy (Ti5563) rolled pipe and preparation method thereof | |
| CN107639129A (en) | The processing technology of corrosion-resistant stainless steel seamless steel pipe | |
| CN107267731A (en) | A kind of production technology for automobile exhaust system stainless steel tube | |
| CN106048421B (en) | A kind of 110ksi grades of stainless steel oil pipe and its manufacture method | |
| CN104107845B (en) | A kind of production technology of stainless-steel pipe | |
| CN104831179A (en) | High-temperature resistant seamless austenitic stainless steel pipe and preparation method thereof | |
| CN103698192B (en) | The chemical etching liquid of display rustless steel original austenite crystal prevention and etching method | |
| CN103322336A (en) | Nickel-copper alloy pipe producing technology and nickel-copper alloy seamless steel pipe | |
| CN101215699A (en) | Stainless steel whitening solution and whitening technique thereof | |
| CN104846237A (en) | Manufacturing method of Ni-Fe-Cr-Mo anticorrosive alloy tube blank | |
| CN103540797A (en) | Titanium alloy (Ti-6246) rolled tube and preparation method thereof | |
| CN102747368B (en) | Etchant for maraging steel and examination method of maraging steel macrostructure | |
| CN103272876B (en) | A kind of resisto seamless pipe | |
| CN102321853B (en) | Stainless steel pipe used in aircrafts and ultra-low temperature systems of aircrafts, and manufacturing method thereof | |
| CN104018067A (en) | High-strength plastic vanadium microalloyed dual-phase steel seamless pipe and preparation method thereof | |
| WO2014187136A1 (en) | Low-carbon nickel-chromium-iron alloy seamless tube | |
| CN103276305B (en) | A kind of preparation technology of the Austenitic stainless steel pipe of the petroleum casing pipe of high sulfur resistive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220114 Address after: 315803 No. 1, building 3, No. 79, Chenshan East Road, Xiaogang street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Zhejiang Tenglong stainless steel rod and wire Co.,Ltd. Address before: 315803 No. 69, Chenshan East Road, Xiaogang street, Beilun District, Ningbo City, Zhejiang Province Patentee before: ZHEJIANG TENGLONG STAINLESS STEEL WIRES CO.,LTD. |
|
| TR01 | Transfer of patent right |