CN102010964A - Heating treatment technology for low-alloy bucket lip mesh tape - Google Patents
Heating treatment technology for low-alloy bucket lip mesh tape Download PDFInfo
- Publication number
- CN102010964A CN102010964A CN 201010597997 CN201010597997A CN102010964A CN 102010964 A CN102010964 A CN 102010964A CN 201010597997 CN201010597997 CN 201010597997 CN 201010597997 A CN201010597997 A CN 201010597997A CN 102010964 A CN102010964 A CN 102010964A
- Authority
- CN
- China
- Prior art keywords
- low alloy
- meshbeltfurnace
- casting
- alloy steel
- steel trolley
- 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
Images
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a heat treatment technology for a low-alloy bucket lip mesh tape, relating to the technical field of heat treatment. The technology comprises the following steps: 1) normalizing: heating a bucket lip casting to 850-890 DEG C by a resistance furnace, preserving heat for 120-150 minutes, and then naturally cooling to room temperature in the air; 2) quenching: putting the normalized bucket lip casting into a mesh tape furnace, heating the normalized bucket lip cast for 20-30 minutes to 850-880 DEG C, preserving heat for 90-110 minutes in the mesh tape furnace, and cooling the bucket lip casting in a quench tank; and 3) tempering: after the bucket lip casting is lifted from the quench tank, continuously heating in the mesh tape furnace to 250-290 DEG C within 40-60 minutes, preserving heat in the mesh tape furnace for 130-160 minutes, taking out the bucket lip casting from the mesh tape furnace, and cooling the bucket lip casting to room temperature in the air. The metallographic structure of the bucket lip casting processed by the technology is 2-6 grades, the hardness can reach 48-52 HRC, the tensile strength reaches 1667 MPa, the yield strength is up to 1445 MPa, and the abrasive resistance meets the road test requirement or can be practically used for more than 500 hours.
Description
Technical field
The present invention relates to the heat treatment technics field, particularly a kind of low alloy bucket teeth thermal treatment process.
Background technology
Bucket tooth generally is contained in the front end of power shovel, mainly plays digging action, directly contacts with hard ware materials such as ore, sand, rocks and carries out operation, need withstand shocks when operation, effects such as bending, friction.So the hardness of bucket tooth, tensile strength, yield strength, wear resistance etc. are all extremely important, these performances can directly have influence on the result of use and the work-ing life of bucket tooth, also have influence on the quality assurance problem of excavator complete machine.Thermal treatment process low and the gold bushel tooth generally comprises normalizing, quenching, tempering, normalizing, quenching, tempering are independently carried out stage by stage, quench and in box-type furnace, heat usually, the defective that adopts box-type furnace to quench is as follows: when 1, frame dress foundry goods quenches, from the foundry goods water inlet of coming out of the stove, the time that exposes in air is longer, and during whole frame foundry goods entry, around whole frame, produce air pocket, influence quenching effect; 2, there are certain difference in the speed of box-type furnace body of heater Nei Ge district temperature rising, the temperature of insulation, exist with the just possible unsettled defective of the quality of stove foundry goods; Unprotect medium when 3, box-type furnace quenches heating, the foundry goods decarburization is more serious; 4, the box-type furnace quenching bath needs very big quench water, is not easy to use hardening liquid.After adopting box-type furnace to quench through the metallographic structure of check and analysis foundry goods 8 grades of phenomenons appear.Therefore adopt the over-all propertieies such as hardness, tensile strength, yield strength, wear resistance of the bucket tooth that this thermal treatment process produces relatively poor, road examination or time used are about 300 hours generally speaking, can not satisfy client's demand, the while relatively lacks competitiveness with the similar product of foreign country.
Summary of the invention
The objective of the invention is defective at background technology provides a kind of mechanical property that can guarantee bucket tooth, improves its wear resistance and the low alloy bucket teeth meshbeltfurnace thermal treatment process of meeting customer need.
The technical solution used in the present invention is to achieve the above object of the invention: a kind of low alloy bucket teeth meshbeltfurnace thermal treatment process, the step of this thermal treatment process comprises: (1) normalizing, make low alloy steel trolley sawtooth casting reach 850～890 ℃ by the resistance furnace heating low alloy steel trolley sawtooth casting, be incubated and in the immobilized air, naturally cool to room temperature after 120～150 minutes; (2) quench, the heating zone of quenching furnance that low alloy steel trolley sawtooth casting after the normalizing treatment is put into meshbeltfurnace is 20～30 minutes internal heating to 850～880 ℃, with 850～880 ℃ temperature insulation 90～110 minutes, the low alloy steel trolley sawtooth casting after the insulation cooled off along with the guipure of meshbeltfurnace transmits the quenching tank that enters meshbeltfurnace in the heat preservation zone of quenching furnance; (3) tempering, after low alloy steel trolley sawtooth casting enters quenching tank, rise to continuation heating in the tempering stove of meshbeltfurnace by automatic lifting device, and in the heating zone of tempering stove 40～60 minutes internal heating to 250～290 ℃,, from the tempering stove of meshbeltfurnace, take out low alloy steel trolley sawtooth casting and make it in air, naturally cool to room temperature with 250～290 ℃ temperature insulation 130～160 minutes in the heat preservation zone of the tempering stove of meshbeltfurnace.
Wherein the weight percent at each composition of step (1) middle-low alloy steel trolley sawtooth casting is: C:0.25～0.33%, Si:0.40～0.80%, Cr:0.45～0.75%, Mn:0.85～1.25%, Mo:0.28～0.42%, P :≤0.04%, S :≤0.04%, all the other are Fe, but also allow to contain Ni in the low alloy steel trolley sawtooth casting.
Wherein be provided with concentration in the quenching tank in step (2) and be 10%～12% hardening liquid.
Wherein being provided with methanol concentration in the quenching furnance in heating in step (2) and the insulating process is 98% protective atmosphere.
Should put neatly when wherein in step (2), low alloy steel trolley sawtooth casting being put in the quenching furnance of meshbeltfurnace, and answer slot milling between row, column.
Low alloy steel trolley sawtooth casting heap higher primary school is in 0.6 meter when wherein low alloy steel trolley sawtooth casting being put in the resistance furnace normalizing in step (1), and the casting weight in the resistance furnace of packing into should be not more than 10 tons.
Have following beneficial effect owing to adopt above-mentioned low alloy bucket teeth meshbeltfurnace thermal treatment process to produce low alloy bucket teeth:
1, quenching effect is good
The low alloy bucket teeth meshbeltfurnace thermal treatment process of invention, owing to adopt the thermal treatment process of meshbeltfurnace in conjunction with correspondence, during quenching, it is fast that low alloy steel trolley sawtooth casting enters quenching tank speed, and low alloy steel trolley sawtooth casting is that single-piece is gone into quenching tank one by one, meshbeltfurnace heats continuously, and each interval low alloy steel trolley sawtooth casting temperature is more even, can guarantee the temperature of thermal treatment process regulation; The protective medium protection is arranged in the meshbeltfurnace when quenching heating, and the low alloy steel trolley sawtooth casting decarburized layer deepness is less, and meshbeltfurnace is provided with independent quenching tank; can use hardening liquid to quench; guarantee that low alloy steel trolley sawtooth obtains speed of cooling quickly, guarantee that martensite fully changes, so quenching effect is good.
2, in time carry out tempering after the quenching, help enhancing productivity
The present invention's low alloy bucket teeth meshbeltfurnace thermal treatment process, owing to adopt the thermal treatment process of meshbeltfurnace in conjunction with correspondence, making Q-tempering is tinuous production, the back low alloy steel trolley sawtooth casting that quenches can in time carry out tempering, not only can guarantee the mechanical property of low alloy bucket teeth, also help enhancing productivity.
3, can guarantee low alloy bucket teeth mechanical property, improve its wear resistance and meet customer need
The present invention's low alloy bucket teeth meshbeltfurnace thermal treatment process, owing to adopt the thermal treatment process of meshbeltfurnace in conjunction with correspondence, quenching effect is good, and in time carry out tempering after quenching, adopt the metallographic structure of the low alloy steel trolley sawtooth casting after this thermal treatment process is handled all in " the machinery industry standard JB/T9211-2008 of the People's Republic of China (PRC) " martensitic stucture through check and analysis, grade is 2～6 grades, low alloy steel trolley sawtooth casting hardness can reach 48～52HRC, tensile strength reaches 1667Mpa, yield strength reaches 1445Mpa, wear resistance reaches the road examination or reality is used more than 500 hours, reach the metallographic structure of the suitable engineering machinery use of mechanical industry requirement, thereby guarantee the mechanical property and the wear resistance of low alloy steel trolley sawtooth casting, improve the suitable effect and the work-ing life of low alloy steel trolley sawtooth.
Below in conjunction with drawings and Examples low alloy bucket teeth meshbeltfurnace thermal treatment process of the present invention is further described.
Description of drawings
Fig. 1 is the structural representation of the meshbeltfurnace of low alloy bucket teeth meshbeltfurnace thermal treatment process of the present invention.
Embodiment
Embodiment one:
Low alloy bucket teeth meshbeltfurnace thermal treatment process of the present invention, the step of this thermal treatment process comprises normalizing, quenching, tempering, wherein quenching, tempering are all carried out in meshbeltfurnace 1, as shown in Figure 1, meshbeltfurnace 1 comprises quenching furnance 2, quenching tank 4, tempering stove 6, quenching furnance 2 and 4 of quenching tanks at meshbeltfurnace are provided with quenching furnance blanking port 3, are provided with automatic lifting device 5 at the quenching tank 4 and 6 of the tempering stoves of meshbeltfurnace.
Low alloy bucket teeth meshbeltfurnace thermal treatment process specifically may further comprise the steps:
(1) normalizing, make low alloy steel trolley sawtooth casting reach 880 ℃ by the heating of resistance furnace (not shown) low alloy steel trolley sawtooth casting, temperature insulation with 880 ℃ naturally cooled to room temperature after 150 minutes in the immobilized air, foundry goods heap higher primary school was in 0.6 meter when low alloy steel trolley sawtooth casting was put in the resistance furnace, the casting weight of packing in the meshbeltfurnace should be not more than 10 tons, wherein the weight percent of each composition of low alloy steel trolley sawtooth casting is: C:0.25～0.33%, Si:0.40～0.80%, Cr:0.45～0.75%, Mn:0.85～1.25%, Mo:0.28～0.42%, P :≤0.04%, S :≤0.04%, all the other are Fe, but also allow to contain Ni in the low alloy steel trolley sawtooth casting, low alloy steel trolley sawtooth casting stress is eliminated in mainly acting as of normalizing, refinement low alloy steel trolley sawtooth casting tissue, be the preparation heat before quenching;
(2) quench, the heating zone of quenching furnance 2 that low alloy steel trolley sawtooth casting after the normalizing treatment is put into meshbeltfurnace 1 is at 20 minutes internal heating to 860 ℃, and in the heat preservation zone of the quenching furnance 2 of meshbeltfurnace with 860 ℃ temperature insulation 90 minutes, should put neat in the time of in the quenching furnance 2 that low alloy steel trolley sawtooth casting is put into meshbeltfurnace, and OK, answer slot milling between row, being provided with methanol concentration in the quenching furnance in heating and the insulating process is 98% protective atmosphere, after the insulation low alloy steel trolley sawtooth casting along with transmitting the quenching tank 4 that enters meshbeltfurnace by quenching furnance blanking port 3, is cooled off by the guipure of meshbeltfurnace, be provided with concentration in the quenching tank 4 and be 10% hardening liquid, quenching furnance front primary reformer body is that the back, heating zone is heat preservation zone for one section, mainly acting as of quenching quenched into martensite with the steel of austenitizing, to improve the hardness of low alloy steel trolley sawtooth casting, intensity and surface abrasion resistance;
(3) tempering, low alloy steel trolley sawtooth casting is promoted the back by automatic lifting device 5 in the tempering stove 6 of meshbeltfurnace, continue heating from quenching tank 4, and in the heating zone of tempering stove at 40 minutes internal heating to 260 ℃, in the heat preservation zone of the tempering stove 6 of meshbeltfurnace with 260 ℃ temperature insulation 150 minutes, taking out low alloy steel trolley sawtooth casting from the tempering stove 6 of meshbeltfurnace makes it naturally cool to room temperature in air, promptly finish tempering, tempering stove is the heating zone near the primary reformer body of quenching tank 4, near outlet one end is heat preservation zone, the tempered main purpose is for reducing or eliminating quenching stress, make low alloy steel trolley sawtooth casting obtain needed mechanical property, regulate the hardness of trolley sawtooth casting, plasticity and toughness.
After present embodiment thermal treatment, the workpiece after handling is carried out check and analysis, detect the check and analysis parameter as shown in table one.
Table one: handle back check and analysis result according to embodiment one described thermal treatment process
Embodiment two:
Low alloy bucket teeth meshbeltfurnace thermal treatment process of the present invention, the step of this thermal treatment process comprises:
(1) normalizing, make low alloy steel trolley sawtooth casting reach 890 ℃ by the heating of resistance furnace (not shown) low alloy steel trolley sawtooth casting, temperature insulation with 890 ℃ naturally cooled to room temperature after 135 minutes in the immobilized air, foundry goods heap higher primary school was in 0.6 meter when low alloy steel trolley sawtooth casting was put in the resistance furnace, the casting weight of packing in the meshbeltfurnace should be not more than 10 tons, wherein each composition of low alloy steel trolley sawtooth casting is identical with embodiment one, and the positive fire action of positive fire action embodiment one is identical;
(2) quench, the heating zone of quenching furnance 2 that low alloy steel trolley sawtooth casting after the normalizing treatment is put into meshbeltfurnace 1 is at 30 minutes internal heating to 870 ℃, and in the heat preservation zone of the quenching furnance 2 of meshbeltfurnace with 870 ℃ temperature insulation 100 minutes, should put neat in the time of in the quenching furnance 2 that low alloy steel trolley sawtooth casting is put into meshbeltfurnace, and OK, answer slot milling between row, being provided with methanol concentration in the quenching furnance in heating and the insulating process is 98% protective atmosphere, after the insulation low alloy steel trolley sawtooth casting along with transmitting the quenching tank 4 that enters meshbeltfurnace by quenching furnance blanking port 3, is cooled off by the guipure of meshbeltfurnace, be provided with concentration in the quenching tank and be 8% hardening liquid, the quenching effect of quenching effect embodiment one is identical;
(3) tempering, low alloy steel trolley sawtooth casting is promoted the back by automatic lifting device 5 in the tempering stove 6 of meshbeltfurnace, continue heating from quenching tank 4, and in the heating zone of tempering stove at 50 minutes internal heating to 270 ℃, in the heat preservation zone of the tempering stove 6 of meshbeltfurnace with 270 ℃ temperature insulation 145 minutes, taking out low alloy steel trolley sawtooth casting from the tempering stove 6 of meshbeltfurnace makes it naturally cool to room temperature in air, promptly finish tempering, the drawing effect of drawing effect embodiment one is identical.
After present embodiment thermal treatment, the workpiece after handling is carried out check and analysis, detect the check and analysis parameter as shown in subordinate list two.
Table two: handle back check and analysis result according to embodiment two described thermal treatment process
Embodiment three to embodiment five, it is slightly different to remove processing parameter, all the other processing condition are identical with embodiment one, two, only its processing parameter is listed as in the table three at this, all the other processing condition are repeated description no longer, wherein Bao Wen temperature is identical with the heating top temperature, no longer lists the temperature of insulation in the table three.
Table three: low alloy bucket teeth meshbeltfurnace thermal treatment process embodiment three to embodiment five main technologic parameters
According to the thermal treatment process of embodiment three to embodiment five, the workpiece after handling is carried out check and analysis, detect the check and analysis parameter respectively as shown in table four, table five, table six.
Table four: handle back check and analysis result according to embodiment three described thermal treatment process
Table five: handle back check and analysis result according to embodiment four described thermal treatment process
Table six: handle back check and analysis result according to embodiment five described thermal treatment process
From the foregoing description one to five as can be known, after tempering is finished, the tempered martensite that is organized as through the low alloy steel trolley sawtooth casting acquisition after the check and analysis employing thermal treatment process processing of the present invention, the martensite grade is 2～6 grades, low alloy steel trolley sawtooth casting hardness can reach 48～52HRC, tensile strength and reach that 1667Mpa is above, yield strength reaches more than the 1445Mpa, and these low alloy bucket teeths detect its wear resistance through overtesting and all can reach the road examination or actually use more than 500 hours.
Claims (6)
1. low alloy bucket teeth meshbeltfurnace thermal treatment process, it is characterized in that, the step of this thermal treatment process comprises: (1) normalizing, make low alloy steel trolley sawtooth casting reach 850～890 ℃ by the resistance furnace heating low alloy steel trolley sawtooth casting, be incubated and in the immobilized air, naturally cool to room temperature after 120～150 minutes; (2) quench, low alloy steel trolley sawtooth casting after the normalizing treatment is put in the quenching furnance of meshbeltfurnace 20～30 minutes internal heating to 850～880 ℃, and in quenching furnance with 850～880 ℃ temperature insulation 90～110 minutes, the low alloy steel trolley sawtooth casting after the insulation cools off along with the guipure of meshbeltfurnace transmits the quenching tank that enters meshbeltfurnace; (3) tempering, after low alloy steel trolley sawtooth casting enters quenching tank, rise to by automatic lifting device and continue heating in the tempering stove of meshbeltfurnace, and in the heating zone of tempering stove 40～60 minutes internal heating to 250～290 ℃,, from the tempering stove of meshbeltfurnace, take out low alloy steel trolley sawtooth casting and make it in air, naturally cool to room temperature with 250～290 ℃ temperature insulation 130～160 minutes in the heat preservation zone of the tempering stove of meshbeltfurnace.
2. low alloy bucket teeth meshbeltfurnace thermal treatment process as claimed in claim 1, it is characterized in that, weight percent at each composition of step (1) middle-low alloy steel trolley sawtooth casting is: C:0.25～0.33%, Si:0.40～0.80%, Cr:0.45～0.75%, Mn:0.85～1.25%, Mo:0.28～0.42%, P :≤0.04%, S :≤0.04%, all the other are Fe, also allow to contain Ni in the low alloy steel trolley sawtooth casting.
3. low alloy bucket teeth meshbeltfurnace thermal treatment process as claimed in claim 2 is characterized in that, is provided with concentration in the quenching tank in step (2) and is 8%～12% hardening liquid.
4. low alloy bucket teeth meshbeltfurnace thermal treatment process as claimed in claim 2 is characterized in that, wherein being provided with methanol concentration in the quenching furnance in heating in step (2) and the insulating process is 98% protective atmosphere.
5. as claim 3 or 4 described low alloy bucket teeth meshbeltfurnace thermal treatment process, it is characterized in that, should put neatly when in step (2), low alloy steel trolley sawtooth casting being put in the quenching furnance of meshbeltfurnace, and answer slot milling between row, column.
6. low alloy bucket teeth meshbeltfurnace thermal treatment process as claimed in claim 1 is characterized in that, foundry goods heap higher primary school is in 0.6 meter when being put into low alloy steel trolley sawtooth casting in the resistance furnace in step (1), and the casting weight in the resistance furnace of packing into should be not more than 10 tons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597997 CN102010964A (en) | 2010-12-21 | 2010-12-21 | Heating treatment technology for low-alloy bucket lip mesh tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597997 CN102010964A (en) | 2010-12-21 | 2010-12-21 | Heating treatment technology for low-alloy bucket lip mesh tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102010964A true CN102010964A (en) | 2011-04-13 |
Family
ID=43841292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010597997 Pending CN102010964A (en) | 2010-12-21 | 2010-12-21 | Heating treatment technology for low-alloy bucket lip mesh tape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102010964A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605271A (en) * | 2012-03-31 | 2012-07-25 | 三一集团有限公司 | Low-alloy high-intensity high-toughness steel and production method of low-alloy high-intensity high-toughness steel |
| CN102605272A (en) * | 2012-03-31 | 2012-07-25 | 三一集团有限公司 | Low-alloy ultrahigh-strength wear-resistant steel and production method thereof |
| CN103614652A (en) * | 2013-12-06 | 2014-03-05 | 河南立德金属材料科技有限公司 | Silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and production technique thereof |
| CN104073611A (en) * | 2014-07-01 | 2014-10-01 | 广东省工业技术研究院(广州有色金属研究院) | Method for preparing form relieved teeth |
| CN104263891A (en) * | 2014-09-09 | 2015-01-07 | 董春年 | Processing technology of scoop for mining |
| CN105483344A (en) * | 2015-12-03 | 2016-04-13 | 天津市中机雄风机械有限公司 | Preparation method for bucket teeth of mining excavator |
| CN105886731A (en) * | 2016-04-28 | 2016-08-24 | 洛阳冠卓重工设备有限公司 | Technology for carrying out sectional transition quenching on bucket teeth of excavator through utilizing forging residual heat |
| CN106011408A (en) * | 2016-06-29 | 2016-10-12 | 安徽祝成动力机械有限公司 | Production line of thermal treatment cooling technology |
| CN107267723A (en) * | 2017-07-11 | 2017-10-20 | 合肥康之恒机械科技有限公司 | A kind of Technology for Heating Processing of low alloy steel castings |
| CN107881436A (en) * | 2013-12-26 | 2018-04-06 | 斗山英维高株式会社 | Building machinery scraper bowl accessory is with cast steel and building machinery scraper bowl accessory |
| CN109750148A (en) * | 2017-11-03 | 2019-05-14 | 常州盛天传动件有限公司 | A kind of mesh-belt conveying formula tempering production technology and production line for sprocket wheel production |
| CN110273447A (en) * | 2019-06-28 | 2019-09-24 | 上海三一重机股份有限公司 | Excavator bucket teeth and its manufacturing method |
| CN112170774A (en) * | 2020-09-22 | 2021-01-05 | 浙江继望锻造科技有限公司 | Casting, forging and quenching integrated production process for forging bucket teeth |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621554A (en) * | 2004-12-16 | 2005-06-01 | 邹乐平 | Complex alloy cast-steel excavator bucket teeth and its producing process |
| US20050247377A1 (en) * | 2002-08-21 | 2005-11-10 | Komatsu Ltd. | Rolling elements |
| CN101748338A (en) * | 2009-12-31 | 2010-06-23 | 南车长江车辆有限公司 | High-strength cast steel for coupler of railway vehicle and manufacturing method thereof |
-
2010
- 2010-12-21 CN CN 201010597997 patent/CN102010964A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050247377A1 (en) * | 2002-08-21 | 2005-11-10 | Komatsu Ltd. | Rolling elements |
| CN1621554A (en) * | 2004-12-16 | 2005-06-01 | 邹乐平 | Complex alloy cast-steel excavator bucket teeth and its producing process |
| CN101748338A (en) * | 2009-12-31 | 2010-06-23 | 南车长江车辆有限公司 | High-strength cast steel for coupler of railway vehicle and manufacturing method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605272A (en) * | 2012-03-31 | 2012-07-25 | 三一集团有限公司 | Low-alloy ultrahigh-strength wear-resistant steel and production method thereof |
| CN102605271A (en) * | 2012-03-31 | 2012-07-25 | 三一集团有限公司 | Low-alloy high-intensity high-toughness steel and production method of low-alloy high-intensity high-toughness steel |
| CN103614652A (en) * | 2013-12-06 | 2014-03-05 | 河南立德金属材料科技有限公司 | Silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and production technique thereof |
| CN107881436A (en) * | 2013-12-26 | 2018-04-06 | 斗山英维高株式会社 | Building machinery scraper bowl accessory is with cast steel and building machinery scraper bowl accessory |
| CN104073611A (en) * | 2014-07-01 | 2014-10-01 | 广东省工业技术研究院(广州有色金属研究院) | Method for preparing form relieved teeth |
| CN104263891A (en) * | 2014-09-09 | 2015-01-07 | 董春年 | Processing technology of scoop for mining |
| CN105483344A (en) * | 2015-12-03 | 2016-04-13 | 天津市中机雄风机械有限公司 | Preparation method for bucket teeth of mining excavator |
| CN105886731A (en) * | 2016-04-28 | 2016-08-24 | 洛阳冠卓重工设备有限公司 | Technology for carrying out sectional transition quenching on bucket teeth of excavator through utilizing forging residual heat |
| CN106011408A (en) * | 2016-06-29 | 2016-10-12 | 安徽祝成动力机械有限公司 | Production line of thermal treatment cooling technology |
| CN107267723A (en) * | 2017-07-11 | 2017-10-20 | 合肥康之恒机械科技有限公司 | A kind of Technology for Heating Processing of low alloy steel castings |
| CN109750148A (en) * | 2017-11-03 | 2019-05-14 | 常州盛天传动件有限公司 | A kind of mesh-belt conveying formula tempering production technology and production line for sprocket wheel production |
| CN110273447A (en) * | 2019-06-28 | 2019-09-24 | 上海三一重机股份有限公司 | Excavator bucket teeth and its manufacturing method |
| CN112170774A (en) * | 2020-09-22 | 2021-01-05 | 浙江继望锻造科技有限公司 | Casting, forging and quenching integrated production process for forging bucket teeth |
| CN112170774B (en) * | 2020-09-22 | 2022-04-12 | 浙江继望锻造科技有限公司 | Casting, forging and quenching integrated production process for forging bucket teeth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102010964A (en) | Heating treatment technology for low-alloy bucket lip mesh tape | |
| CN102400048B (en) | Cold work roll steel for high-strength steel rolling, cold work roll and its manufacturing method | |
| CN101487102B (en) | Non-molybdenum non-nickel middle chrome wear resistant steel casting and heat treatment method thereof | |
| CN107988550B (en) | Steel for pressurized water reactor nuclear power station pressure vessel support and manufacturing method thereof | |
| CN100569983C (en) | A kind of preparation method of Cr-Mn-Ti Pinion Steel | |
| CN100366779C (en) | Stone material cutting saw blade steel and its manufacturing method | |
| CN102251184A (en) | Fe-Cr-B antifriction alloy containing aluminum and preparation method thereof | |
| CN114411043B (en) | Preparation method of large hot forging hot work die steel | |
| CN107130172B (en) | 400HBW grades of Brinell hardness whole constrictive type high tenacity easily weld special thick wear-resisting steel plate and its manufacturing method | |
| CN102912248A (en) | High-toughness wear resistant martensitic stainless steel and production method thereof | |
| CN102383044B (en) | Multicomponent high speed steel used for preparing roller | |
| CN104878296A (en) | High vanadium anti-wear alloy material for rolling mill guide roller and rolling mill guide roller heat treatment method | |
| CN106521361A (en) | High-performance wear resisting steel plate and production method thereof | |
| CN103266276A (en) | Method for preparing low alloy high wear resistant cast steel plate | |
| CN114540716B (en) | High-strength high-toughness long-service-life steel for valve body of underwater Christmas tree with wall thickness of more than or equal to 600mm, and heat treatment method and production method thereof | |
| CN105951002A (en) | Preparation method of corrosion-resistance stainless steel wire easy to mold | |
| CN112048668B (en) | High-hardness steel for shield cutter and manufacturing method thereof | |
| CN109694983B (en) | High-mirror-surface corrosion-resistant plastic die steel and manufacturing method thereof | |
| CN113737106B (en) | Die steel for 1500MPa hot stamping part cold trimming punching cutter and preparation method thereof | |
| CN103014522A (en) | Novel low-cost wear-resistant high-strength Q550D steel plate and production method thereof | |
| CN105568158A (en) | Nickel-chromium-free impact-resistant bearing steel and producing method thereof | |
| CN107267880B (en) | A kind of high cracking resistance wear-resistant bainite Jaw plate steel, Jaw plate and preparation method | |
| CN104178691A (en) | High-strength steel for metallurgical saw blades and heat treatment method thereof | |
| CN109694994B (en) | Corrosion-resistant high-wear-resistant steel ball and manufacturing method thereof | |
| CN107435124A (en) | High tungsten ledeburite pinion steel of hard high-wearing feature 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |