CN102644027A - Fixed-length shear blade and manufacturing method thereof - Google Patents
Fixed-length shear blade and manufacturing method thereof Download PDFInfo
- Publication number
- CN102644027A CN102644027A CN2011100436657A CN201110043665A CN102644027A CN 102644027 A CN102644027 A CN 102644027A CN 2011100436657 A CN2011100436657 A CN 2011100436657A CN 201110043665 A CN201110043665 A CN 201110043665A CN 102644027 A CN102644027 A CN 102644027A
- Authority
- CN
- China
- Prior art keywords
- shear blade
- fixed
- blade
- quenching
- tempering
- 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
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a fixed-length shear blade and a manufacturing method of the fixed-length shear blade. The fixed-length shear blade comprises the following components by weight percent: 0.75-1.00% of C, 0.60-1.40% of Si, 0.20-0.50% of Mn, 6.50-8.00% of Cr, 2.50-4.00% of Mo, 1.80-3.50% of V, less than or equal to 0.020% of S, less than or equal to 0.020% of P, the balance of Fe and the unavoidable impurities; and the manufacturing method of the fixed-length shear blade comprises the technological process of: smelting by an induction furnace, electrode bar pouring, electroslag remelting, ingot casting, forging, preheating treatment, rough machining, hardening and tempering heat treatment, semi-finishing, final heat treatment and finish machining. The fixed-length shear blade is high in strength and wear resistance, thus guaranteeing the shock resistance of the blade.
Description
Technical field
The present invention relates to a kind of metallurgical machinery blade, particularly a kind of anti-chipping, anti abrasive scale shear blade and method of manufacture thereof.
Background technology
Fast development along with industries such as China's national defense, aerospace, nuclear powers; The strip product consumption of special steels such as titanium or titanium alloy, superalloy, non-corrosive metal, Precise Alloy, special stainless steel constantly increases, and the strip production technology of special steel becomes focus development both domestic and external field.
Because the product category of special steel strip is many, the product strength rank high, hardness is high, ys is up to 1200MPa, and the unit shearing force of product scale nibbling shear is big, and the wear resistance of blade and shock resistance have proposed very high requirement.
Chinese patent CN101144140A discloses a kind of flying shear blade and method of manufacture thereof, and the Chemical Composition of this blade (weight percent) is C:0.30-0.70%; Si:0.50-1.2%; Mn:0.20-0.50%; Ni:0.00-1.00%; Cr:4.00-6.00%; Mo:0.50-2.00%; V:0.30-1.50%; P≤0.02%; S≤0.02%; All the other are Fe and unavoidable impurities.Chinese patent CN101177765A discloses a kind of disc shear blade thereby and method of manufacture thereof, and the Chemical Composition of this blade (weight percent) is C:0.40-0.70%; Si:0.50-1.2%; Mn:0.20-0.50%; Ni:1.00-1.50%; Cr:4.00-6.00%; Mo:0.50-2.00%; V:0.30-1.50%; Nb:0.10-0.80%; P≤0.02%; S≤0.02%; All the other are Fe and unavoidable impurities.The content of easy formation carbide alloy elements such as the C constituent content of above-mentioned two kinds of blade materials and Cr, Mo, V is lower; Thereby the double carbide total amount is no more than 10% in the tissue; Abrasion resistance properties is general, and when shearing special steel, cutting edge very easily produces phenomenons such as quick wearing and tearing, chipping, the limit of collapsing; Blade is very short work-ing life, has a strong impact on product shearing quality, production cost and production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of scale shear blade and method of manufacture thereof, can effectively solve the shearing difficult problem of HS, high firmness steel plate shear problem, particularly special steel.
For realizing above-mentioned purpose, the composition weight percent of scale shear blade of the present invention is C:0.75～1.00%; Si:0.60～1.40%; Mn:0.20～0.50%; Cr:6.50～8.00%; Mo:2.50～4.00%; V:1.80～3.50%; S≤0.020%; P≤0.020%; Surplus is Fe and unavoidable impurities.
Scale shear blade of the present invention is pressed following technical process manufacturing: induction furnace smelting → cast electrode bar → electroslag remelting → ingot casting → forging → conditioning heat treatment → roughing → modified thermal treatment → semi-finishing → final thermal treatment → precision work.
Esr is carried out in the induction furnace smelting afterwards, forging makes the blade forging stock, and forging stock carries out conditioning heat treatment, carries out roughing and modified thermal treatment after the conditioning heat treatment.
Quenching-and-tempering process is: the molten admittedly quenching temperature of high temperature is that 1100～1150 ℃, time are 0.1～1 hour, oil bath Cooling Quenching, and the high tempering temperature is that 650～720 ℃, time are 5～20 hours.
Final thermal treatment comprises integral quenching, three tempering and homogenizing treatment process.The integral quenching temperature is that 1100～1150 ℃, time are 0.1～2 hour, oil bath Cooling Quenching; Three tempering temperatures are 500～600 ℃, time and are 6～12 hours; The homogenizing treatment temp is that 150～250 ℃, time are 20～40 hours, eliminates the internal stress stable dimensions.
Scale shear blade material of the present invention has than high-strong toughness; Guaranteed the anti-chipping performance of blade; Alloying element contents such as C constituent content and Cr, Mo, V increase simultaneously, can form more double carbide, and carbide content reaches 10～20% in the tissue; And have significant age hardening effect, guaranteed the hardness and the abrasion resistance properties of blade.
The method of manufacture of scale shear blade of the present invention is quenched and the multiple high temp tempering heat treatment process through integral high-temperature, and the blade tissue can obtain sufficient precipitation strength; Both can form enough disperses wear-resisting carbide that distributes, guarantee that type, quantity and the distribution of carbide was reasonable, again can thinning microstructure, strengthen matrix; Reduce unrelieved stress; Improved the wear resisting property of cutting edge greatly, blade hardness is 54-64HRC, has guaranteed the excellent shock resistance of blade.
Embodiment
Followingly specify the present invention with reference to embodiment 1～5.
Press the scale shear blade of embodiment of the present invention respectively of Chemical Composition shown in the table 1 at present.
The Chemical Composition (wt.%) of table 1 contrast material and scale shear blade of the present invention
| C | Si | Mn | Cr | Mo | V | P | S | |
| The contrast material | 0.50 | 0.90 | 0.30 | 5.00 | 0.90 | 0.80 | 0.023 | 0.006 |
| Embodiment 1 | 1.00 | 0.60 | 0.20 | 6.50 | 4.00 | 3.50 | 0.012 | 0.005 |
| Embodiment 2 | 0.90 | 0.80 | 0.30 | 7.00 | 3.50 | 3.00 | 0.014 | 0.005 |
| Embodiment 3 | 0.85 | 1.00 | 0.40 | 7.00 | 3.00 | 2.50 | 0.012 | 0.007 |
| Embodiment 4 | 0.80 | 1.20 | 0.40 | 7.50 | 3.00 | 2.00 | 0.013 | 0.005 |
| Embodiment 5 | 0.75 | 1.40 | 0.50 | 8.00 | 2.50 | 1.80 | 0.014 | 0.006 |
Make blade of the present invention by following operational path:
Induction furnace smelting → cast electrode bar → electroslag remelting → ingot casting → forging → conditioning heat treatment → roughing → modified thermal treatment → semi-finishing → final thermal treatment → precision work.
Esr is carried out in the induction furnace smelting afterwards, forging makes the blade forging stock, and forging stock carries out conditioning heat treatment, carries out roughing and modified thermal treatment after the conditioning heat treatment.Quenching-and-tempering process is: the molten admittedly quenching temperature of high temperature is that 1100～1150 ℃, time are 0.1～1 hour, oil bath Cooling Quenching, and the high tempering temperature is that 650～720 ℃, time are 5～20 hours.
Modified process of thermal treatment parameter is as shown in table 2.
The modified process of thermal treatment parameter of table 2
| Oil quenching | The high tempering temperature and time | |
| The contrast material | 1020℃×1h | 650℃×8h |
| Embodiment 1 | 1150℃×0.1h | 720℃×20h |
| Embodiment 2 | 1140℃×0.5h | 700℃×15h |
| Embodiment 3 | 1130℃×1h | 680℃×10h |
| Embodiment 4 | 1120℃×1.5h | 680℃×10h |
| Embodiment 5 | 1100℃×2h | 650℃×5h |
Final thermal treatment comprises integral quenching, three tempering and homogenizing treatment process.The integral quenching temperature is that 1100～1150 ℃, time are 0.1～2 hour, oil bath Cooling Quenching; Three tempering temperatures are 500～600 ℃, time and are 6～12 hours; The homogenizing treatment temp is that 150～250 ℃, time are 20～40 hours.
Final process of thermal treatment parameter is as shown in table 3.
The final process of thermal treatment parameter of table 3
By the blade that above-mentioned material and production technique are made, process stabilizing.The mechanical property and the hardness of embodiment finished product blade are as shown in table 3.
The mechanical property and the hardness of table 3 contrast material and embodiment finished product blade
The scale shear blade that the present invention is prepared is guaranteeing to have higher yield strength and tensile strength under the prerequisite of hardness, thereby makes the shock resistance of scale shear blade, non-deformability strong.
Claims (4)
1. a scale shear blade is characterized in that, its composition weight percent is:
C：0.75～1.00％；
Si：0.60～1.40％；
Mn：0.20～0.50％；
Cr：6.50～8.00％；
Mo：2.50～4.00％；
V：1.80～3.50％；
S≤0.020％；
P≤0.020％；
Surplus is Fe and unavoidable impurities.
2. the method for manufacture of scale shear blade as claimed in claim 1 is characterized in that, comprises following technical process:
Induction furnace smelting → cast electrode bar → electroslag remelting → ingot casting → forging → conditioning heat treatment → roughing → modified thermal treatment → semi-finishing → final thermal treatment → precision work.
3. the method for manufacture of scale shear blade as claimed in claim 2; It is characterized in that; Said quenching-and-tempering process is: under 1100～1150 ℃ temperature, be incubated 0.1～1 hour oil quenching, and under 650～720 ℃ temperature, be incubated 5～20 hours and carry out high tempering.
4. the method for manufacture of scale shear blade as claimed in claim 2 is characterized in that, said final thermal treatment comprises that integral quenching, three tempering and homogenizing handle, and said integral quenching is an oil quenching, and temperature is that 1100～1150 ℃, time are 0.1～2 hour; Said three tempering temperatures are 500～600 ℃, time and are 6～12 hours; Said homogenizing treatment temp is that 150～250 ℃, time are 20～40 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100436657A CN102644027A (en) | 2011-02-22 | 2011-02-22 | Fixed-length shear blade and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100436657A CN102644027A (en) | 2011-02-22 | 2011-02-22 | Fixed-length shear blade and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644027A true CN102644027A (en) | 2012-08-22 |
Family
ID=46657101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100436657A Pending CN102644027A (en) | 2011-02-22 | 2011-02-22 | Fixed-length shear blade and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102644027A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397159A (en) * | 2013-07-26 | 2013-11-20 | 常熟市劲力工具有限公司 | Production process of slitting cutting disc |
| CN103639676A (en) * | 2013-12-25 | 2014-03-19 | 安徽日升机械制造有限公司 | Machining method of crescent shear blade with high wear resistance and impact resistance |
| CN103934652A (en) * | 2014-03-16 | 2014-07-23 | 泰州市兴东煤矿机械制造有限公司 | Machining method for gear of coal mining equipment |
| CN107737998A (en) * | 2015-08-14 | 2018-02-27 | 马鞍山市恒泰重工机械有限公司 | A kind of high-precision laser bonding machine cutting edge |
| CN108698240A (en) * | 2016-02-23 | 2018-10-23 | 皇家飞利浦有限公司 | The method for folding to free from flaw the metal stock made of high-strength material |
| CN109321715A (en) * | 2018-10-29 | 2019-02-12 | 马鞍山市申力特重工机械股份有限公司 | A kind of wear-resisting roll-type hot rolling blade of high red hardness |
| CN113621865A (en) * | 2020-05-06 | 2021-11-09 | 宝山钢铁股份有限公司 | Process method for smelting steel for superfine carborundum wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01201442A (en) * | 1988-02-08 | 1989-08-14 | Hitachi Metals Ltd | Steel for thread rolling die |
| CN101144140A (en) * | 2006-09-15 | 2008-03-19 | 宝山钢铁股份有限公司 | Flying shear blade and preparation method thereof |
-
2011
- 2011-02-22 CN CN2011100436657A patent/CN102644027A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01201442A (en) * | 1988-02-08 | 1989-08-14 | Hitachi Metals Ltd | Steel for thread rolling die |
| CN101144140A (en) * | 2006-09-15 | 2008-03-19 | 宝山钢铁股份有限公司 | Flying shear blade and preparation method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397159A (en) * | 2013-07-26 | 2013-11-20 | 常熟市劲力工具有限公司 | Production process of slitting cutting disc |
| CN103397159B (en) * | 2013-07-26 | 2015-07-29 | 常熟市劲力工具有限公司 | Cut the production technique of rotary knife |
| CN103639676A (en) * | 2013-12-25 | 2014-03-19 | 安徽日升机械制造有限公司 | Machining method of crescent shear blade with high wear resistance and impact resistance |
| CN103639676B (en) * | 2013-12-25 | 2016-02-10 | 安徽日升机械制造有限公司 | A kind of crescent-moon scissors slice processing method with high-wearing feature and strong impact resistance |
| CN103934652A (en) * | 2014-03-16 | 2014-07-23 | 泰州市兴东煤矿机械制造有限公司 | Machining method for gear of coal mining equipment |
| CN107737998A (en) * | 2015-08-14 | 2018-02-27 | 马鞍山市恒泰重工机械有限公司 | A kind of high-precision laser bonding machine cutting edge |
| CN107737998B (en) * | 2015-08-14 | 2019-01-25 | 马鞍山市恒泰重工机械有限公司 | A kind of high-precision laser bonding machine cutting edge |
| CN108698240A (en) * | 2016-02-23 | 2018-10-23 | 皇家飞利浦有限公司 | The method for folding to free from flaw the metal stock made of high-strength material |
| CN109321715A (en) * | 2018-10-29 | 2019-02-12 | 马鞍山市申力特重工机械股份有限公司 | A kind of wear-resisting roll-type hot rolling blade of high red hardness |
| CN113621865A (en) * | 2020-05-06 | 2021-11-09 | 宝山钢铁股份有限公司 | Process method for smelting steel for superfine carborundum wire |
| CN113621865B (en) * | 2020-05-06 | 2022-06-28 | 宝山钢铁股份有限公司 | Process method for smelting steel for superfine carborundum wire |
| EP4119687A4 (en) * | 2020-05-06 | 2023-09-13 | Baoshan Iron & Steel Co., Ltd. | Process for smelting steel for ultrafine carborundum wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110172641B (en) | Fine-grain high-toughness hot-work die steel and preparation method thereof | |
| CN102251184B (en) | Fe-Cr-B antifriction alloy containing aluminum and preparation method thereof | |
| CN102644027A (en) | Fixed-length shear blade and manufacturing method thereof | |
| CN103898415B (en) | A kind of modified version Cr8 Steel Roll and preparation method thereof | |
| CN102605285B (en) | Austenitic stainless steel and method for manufacturing same | |
| CN110129678B (en) | Economical fine-grain high-toughness hot-work die steel and preparation method thereof | |
| CN101709428A (en) | Compound microalloy hot die steel with high heat resistance and preparation method thereof | |
| CN103397267A (en) | Cold roll for rolling lithium battery guard plate and manufacturing method thereof | |
| CN103938096A (en) | High-strength high-toughness hot work die steel and preparation method thereof | |
| CN102644026A (en) | Cold roll and manufacturing method thereof | |
| CN102653837A (en) | High-toughness wear-resistant cold-working die steel and preparation method thereof | |
| CN104561802A (en) | High-hardness high-toughness cold work die steel as well as preparation method thereof | |
| CN104178694A (en) | Long-service life hot work die steel | |
| CN101392354B (en) | High alloy cold-work die steel | |
| CN101445892B (en) | High boron high-speed steel roll material | |
| CN109182669B (en) | High-hardness high-toughness easy-welding pre-hardened plastic die steel and preparation method thereof | |
| CN103911556A (en) | Hot work die steel material and preparation method thereof | |
| CN102912248A (en) | High-toughness wear resistant martensitic stainless steel and production method thereof | |
| CN111057950A (en) | High-temperature-resistant and high-toughness hot-work die steel and preparation method thereof | |
| CN103403209B (en) | The hot work tool steel of tenacity excellent and manufacture method thereof | |
| CN114032464B (en) | High-performance shearing blade for wide and thick plates and manufacturing method thereof | |
| CN102859021A (en) | Stainless steel for molds having a lower delta-ferrite content | |
| CN103147004A (en) | Hot-rolled low-alloy high-strength steel plate and preparation method for same | |
| CN100482840C (en) | Nickel-base high-temperature alloy material for guide roller and heat treatment process thereof | |
| CN114214567A (en) | Ni3Al intermetallic compound precipitation-strengthened high-temperature bearing steel and preparation method thereof |
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: 20120822 |