CN104988410A - High-hardness retractable door - Google Patents
High-hardness retractable door Download PDFInfo
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- CN104988410A CN104988410A CN201510238032.XA CN201510238032A CN104988410A CN 104988410 A CN104988410 A CN 104988410A CN 201510238032 A CN201510238032 A CN 201510238032A CN 104988410 A CN104988410 A CN 104988410A
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- troostite
- chromium steel
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- soaking time
- high chromium
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- 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
Abstract
The invention discloses a high-hardness retractable door. The high-hardness retractable door consists of a door body, a driving motor, a sliding rail and a control system, wherein the door body is driven by the driving motor to move on the sliding rail, the control system is connected with the driving motor in a communicating manner, and the driving motor is controlled by the control system to operate; the door body is made from troostite high-chromium steel; the troostite high-chromium steel comprises the following components in percentage by weight: 1.8-2.4% of carbon, 9-12% of chromium, 0.7-1.2% of molybdenum, 0.5-1% of copper, 0.4-0.8% of manganese, 0.6-0.8% of silicon, sulfur of which the percentage by weight is smaller than or equal to 0.08%, phosphorus of which the percentage by weight is smaller than or equal to 0.05% and the balance Fe and inevitable impurities. The hardness and the abrasion resistant property of the high-hardness retractable door disclosed by the invention can be greatly improved, the strength of a product is greatly improved, and frictional loss between the door body and the sliding rail can be observably reduced.
Description
Technical field
The present invention relates to retractable door technical field, particularly relate to a kind of high rigidity retractable door.
Background technology
Retractable door (Retractable door) is exactly that door body can stretch and moves freely, and controls a kind of door of door opening size, the interception controlling pedestrian or vehicle and clearance.The door body of retractable door adopts parallelogram principle hinged, and flexible flexible stroke is large.Driving mechanism adopts specific type of electric machine to drive, and worm and wormwheel slows down, and is provided with automatic clutch or manual clutch.
Because retractable door needs the interception and the clearance that control pedestrian or vehicle, often generation accident, needs retractable door to have high strength, and can produce friction between the door body of retractable door and slideway, and this just requires that retractable door has wear-resisting performance.
Summary of the invention
The present invention proposes a kind of high rigidity retractable door, hardness and wear resisting property significantly improve, and product strength increases greatly, and significantly can reduce the frictional dissipation between Men Tiyu slideway.
A kind of high rigidity retractable door that the present invention proposes, be made up of door body, drive-motor, slideway, Controlling System, drive-motor driving gate body is movable on slideway, Controlling System is connected with drive-motor communication and controls drive-motor action, door body adopts troostite high chromium steel to make, and troostite high chromium steel compositions in weight percentage comprises:
All the other are iron and inevitable impurity;
In the preparation process of troostite high chromium steel, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, gray iron, fine copper, silica flour are sent in process furnace and heated, treat that temperature is increased to 800-1100 DEG C, insulation 1-2h, sand-covering technique is shaping, and covering sand layer thickness is 1.5-3.5mm, cover sand to comprise by weight: moulding silica sand 80-90 part, clay 10-15 part, water glass 6-8 part, coal dust 2-3 part; Cooling is put into nitrate solution and is heat-treated, and nitrate solution is made up of 40-60% SODIUMNITRATE and 40-60% saltpetre, and nitrate solution temperature is 600-800 DEG C, cooling, obtains prefabricated door body, prefabricated door body is put into process furnace, be warming up to 200-250 DEG C, soaking time 60-100min; Be warming up to 300-350 DEG C, soaking time 40-80min; Be warming up to 500-550 DEG C, soaking time 80-120min; Be warming up to 600-700 DEG C, soaking time 50-90min; Be warming up to 800-840 DEG C, soaking time 50-75min; Be warming up to 900-950 DEG C, soaking time 60-100min; Wind is quenched, and 10-30min, put into process furnace by the material obtained, charging temperature 120-150 DEG C, be warming up to 400-4500 DEG C, soaking time 30-40min cooling time, and slow cooling time 30-50min, obtains troostite high chromium steel.
Preferably, the granularity of moulding silica sand is 0.15-0.3mm, refractoriness > 1450 DEG C.
Preferably, in the preparation process of troostite high chromium steel, more than 95% clay is by the sieve aperture of 0.106mm.
Preferably, in the preparation process of troostite high chromium steel, modulus of water glass is 2.51-2.9, and density is 1.45-1.55g/cm
3.
Preferably, in the component of troostite high chromium steel, the weight ratio of carbon and chromium is 2-2.3:10-12.
Preferably, in the component of troostite high chromium steel, the weight ratio of carbon and silicon is 2-2.3:0.65-0.72.
Preferably, in the component of troostite high chromium steel, the weight ratio of carbon and molybdenum is 2-2.3:0.8-1.
Preferably, the compositions in weight percentage of troostite high chromium steel comprises:
All the other are iron and inevitable impurity.
Door body of the present invention adopts troostite high chromium steel to make, and troostite high chromium steel is by adopting steel scrap, ferrochrome, ferromanganese, molybdenum-iron, gray iron, fine copper, silica flour is as base material, carbon and silicon are the principal elements affecting door body wear resistance and toughness, door body metallographic structure be troostite+eutectic carbides and be less than 5% austenite, carbon content is the important factor affecting door body performance, increase with carbon content, carbide increasing number in tissue, hardness increases, toughness declines, door body fragmentation tendency increases, ensure that carbide is based on M7C3, chromium content must be greater than 10%, chromium is partially soluble in matrix in addition, improve the electropotential of matrix, chromium effectively can strengthen the ability of electrochemically resistant corrosion, opposite house body anticorrosive highly beneficial, chromium content is more than 20%, toughness obviously declines, silicon reduces the hardening capacity of rich chromium cast iron, silicon amount increases, hardness increases, and higher silicon is dissolved in matrix, be conducive to improving erosion resistance, but silicon amount can not be too high, if more than 8%, toughness significantly declines, manganese forms austenitic element, the formation of carbide is also worked, and add molybdenum and copper is in order to crystal grain thinning, strengthening matrix, improve wear resistance, copper also can reduce erosion rate in addition, strengthen corrosion-resistant, because molybdenum-iron is expensive, for reducing costs consideration, increase the content of copper, with molybdenum mating reaction, wear resistance and strengthen corrosion-resistant better.Adopt the door body that troostite high chromium steel obtains, good toughness, hardness and wear resisting property significantly improve, hardness value reaches 60-72HRC, and intensity increases greatly, and significantly can reduce the frictional dissipation between body and slideway, increase the service life, its life-span is about the 5-8 of common slideway doubly, remarkable in economical benefits.
Embodiment
Embodiment 1
A kind of high rigidity retractable door that the present invention proposes, be made up of door body, drive-motor, slideway, Controlling System, drive-motor driving gate body is movable on slideway, Controlling System is connected with drive-motor communication and controls drive-motor action, door body adopts troostite high chromium steel to make, and troostite high chromium steel compositions in weight percentage comprises:
All the other are iron and inevitable impurity;
In the preparation process of troostite high chromium steel, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, gray iron, fine copper, silica flour are sent in process furnace and heated, treats that temperature is increased to 1100 DEG C, insulation 1h, sand-covering technique is shaping, cooling is put into nitrate solution and is heat-treated, and nitrate solution is made up of 60% SODIUMNITRATE and 40% saltpetre, and solution temperature is 800 DEG C, obtain prefabricated door body, prefabricated door body is put into process furnace, is warming up to 260 DEG C, soaking time 100min; Be warming up to 480 DEG C, soaking time 80min; Be warming up to 620 DEG C, soaking time 120min; Be warming up to 820 DEG C, soaking time 90min; Be warming up to 885 DEG C, soaking time 75min; Be warming up to 950 DEG C, soaking time 100min; Wind is quenched, and cooling time, 10min, put into process furnace by the material obtained, and charging temperature, lower than 100 DEG C, is warming up to 400 DEG C, soaking time 45min, and slow cooling time 30min, obtains troostite high chromium steel.
Wherein covering sand layer thickness is 1.5mm; Cover sand to comprise by weight: moulding silica sand 90 parts, clay 10 parts, water glass 8 parts, coal dust 2 parts; The granularity of moulding silica sand is 0.3mm, refractoriness > 1450 DEG C; The clay of more than 95% is by the sieve aperture of 0.106mm; Modulus of water glass is 2.51, and density is 1.55g/cm
3.
Embodiment 2
A kind of high rigidity retractable door that the present invention proposes, be made up of door body, drive-motor, slideway, Controlling System, drive-motor driving gate body is movable on slideway, Controlling System is connected with drive-motor communication and controls drive-motor action, door body adopts troostite high chromium steel to make, and troostite high chromium steel compositions in weight percentage comprises:
All the other are iron and inevitable impurity;
In the preparation process of troostite high chromium steel, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, gray iron, fine copper, silica flour are sent in process furnace and heated, treats that temperature is increased to 800 DEG C, insulation 2h, sand-covering technique is shaping, cooling is put into nitrate solution and is heat-treated, and nitrate solution is made up of 40% SODIUMNITRATE and 60% saltpetre, and solution temperature is 600 DEG C, obtain prefabricated door body, prefabricated door body is put into process furnace, is warming up to 300 DEG C, soaking time 60min; Be warming up to 520 DEG C, soaking time 40min; Be warming up to 680 DEG C, soaking time 80min; Be warming up to 880 DEG C, soaking time 50min; Be warming up to 920 DEG C, soaking time 50in; Be warming up to 1000 DEG C, soaking time 60min; Wind is quenched, and cooling time, 30min, put into process furnace by the material obtained, and charging temperature, lower than 100 DEG C, is warming up to 350 DEG C, soaking time 50min, and slow cooling time 20min, obtains troostite high chromium steel.
Wherein covering sand layer thickness is 3.5mm, covers sand and comprises by weight: moulding silica sand 80 parts, clay 15 parts, water glass 6 parts, coal dust 3 parts; The granularity of moulding silica sand is 0.15mm, refractoriness > 1450 DEG C; The clay of more than 95% is by the sieve aperture of 0.106mm; Modulus of water glass is 2.9, and density is 1.45g/cm
3.
Embodiment 3
A kind of high rigidity retractable door that the present invention proposes, be made up of door body, drive-motor, slideway, Controlling System, drive-motor driving gate body is movable on slideway, Controlling System is connected with drive-motor communication and controls drive-motor action, door body adopts troostite high chromium steel to make, and troostite high chromium steel compositions in weight percentage comprises:
All the other are iron and inevitable impurity;
In the preparation process of troostite high chromium steel, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, gray iron, fine copper, silica flour are sent in process furnace and heated, treats that temperature is increased to 1000 DEG C, insulation 1.5h, sand-covering technique is shaping, cooling is put into nitrate solution and is heat-treated, and nitrate solution is made up of 45% SODIUMNITRATE and 55% saltpetre, and solution temperature is 700 DEG C, obtain prefabricated door body, prefabricated door body is put into process furnace, is warming up to 280 DEG C, soaking time 80min; Be warming up to 500 DEG C, soaking time 70min; Be warming up to 650 DEG C, soaking time 100min; Be warming up to 850 DEG C, soaking time 80min; Be warming up to 890 DEG C, soaking time 65min; Be warming up to 980 DEG C, soaking time 80min; Wind is quenched, and cooling time, 26min, put into process furnace by the material obtained, and charging temperature, lower than 100 DEG C, is warming up to 380 DEG C, soaking time 48min, and slow cooling time 25min, obtains troostite high chromium steel.
Wherein covering sand layer thickness is 2.5mm, covers sand and comprises by weight: moulding silica sand 85 parts, clay 13 parts, water glass 7 parts, coal dust 2.5 parts; The granularity of moulding silica sand is 0.2mm, refractoriness > 1450 DEG C; The clay of more than 95% is by the sieve aperture of 0.106mm; Modulus of water glass is 2.8, and density is 1.48g/cm
3.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a high rigidity retractable door, it is characterized in that, be made up of door body, drive-motor, slideway, Controlling System, drive-motor driving gate body is movable on slideway, Controlling System is connected with drive-motor communication and controls drive-motor action, door body adopts troostite high chromium steel to make, and the compositions in weight percentage of troostite high chromium steel comprises:
All the other are iron and inevitable impurity;
In the preparation process of troostite high chromium steel, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, gray iron, fine copper, silica flour are sent in process furnace and heated, treat that temperature is increased to 800-1100 DEG C, insulation 1-2h, sand-covering technique is shaping, and covering sand layer thickness is 1.5-3.5mm, cover sand to comprise by weight: moulding silica sand 80-90 part, clay 10-15 part, water glass 6-8 part, coal dust 2-3 part; Cooling is put into nitrate solution and is heat-treated, and nitrate solution is made up of 40-60% SODIUMNITRATE and 40-60% saltpetre, and nitrate solution temperature is 600-800 DEG C, cooling, obtains prefabricated door body, prefabricated door body is put into process furnace, be warming up to 200-250 DEG C, soaking time 60-100min; Be warming up to 300-350 DEG C, soaking time 40-80min; Be warming up to 500-550 DEG C, soaking time 80-120min; Be warming up to 600-700 DEG C, soaking time 50-90min; Be warming up to 800-840 DEG C, soaking time 50-75min; Be warming up to 900-950 DEG C, soaking time 60-100min; Wind is quenched, and 10-30min, put into process furnace by the material obtained, charging temperature 120-150 DEG C, be warming up to 400-4500 DEG C, soaking time 30-40min cooling time, and slow cooling time 30-50min, obtains troostite high chromium steel.
2. high rigidity retractable door according to claim 1, is characterized in that, in the preparation process of troostite high chromium steel, the granularity of moulding silica sand is 0.15-0.3mm, refractoriness > 1450 DEG C.
3. high rigidity retractable door according to claim 1 and 2, is characterized in that, in the preparation process of troostite high chromium steel, more than 95% clay is by the sieve aperture of 0.106mm.
4. the high rigidity retractable door according to any one of claim 1-3, is characterized in that, in the preparation process of troostite high chromium steel, modulus of water glass is 2.51-2.9, and density is 1.45-1.55g/cm
3.
5. the high rigidity retractable door according to any one of claim 1-4, is characterized in that, in the component of troostite high chromium steel, the weight ratio of carbon and chromium is 2-2.3:10-12.
6. the high rigidity retractable door according to any one of claim 3-5, is characterized in that, in the component of troostite high chromium steel, the weight ratio of carbon and silicon is 2-2.3:0.65-0.72.
7. the high rigidity retractable door according to any one of claim 3-5, is characterized in that, in the component of troostite high chromium steel, the weight ratio of carbon and molybdenum is 2-2.3:0.8-1.
8. high rigidity retractable door according to claim 1, is characterized in that, the compositions in weight percentage of troostite high chromium steel comprises:
All the other are iron and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238032.XA CN104988410A (en) | 2015-05-11 | 2015-05-11 | High-hardness retractable door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238032.XA CN104988410A (en) | 2015-05-11 | 2015-05-11 | High-hardness retractable door |
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| CN104988410A true CN104988410A (en) | 2015-10-21 |
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| CN201510238032.XA Pending CN104988410A (en) | 2015-05-11 | 2015-05-11 | High-hardness retractable door |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88105047A (en) * | 1988-03-31 | 1988-12-21 | 沈阳市城区经济技术开发公司 | Brasion-and impact-resistant high-carbon manganese chromium rare-earth alloy |
| US6702905B1 (en) * | 2003-01-29 | 2004-03-09 | L. E. Jones Company | Corrosion and wear resistant alloy |
| CN101078330A (en) * | 2007-05-31 | 2007-11-28 | 霍志文 | Novel telescopic door |
| CN101985683A (en) * | 2010-11-13 | 2011-03-16 | 大连冶金工具厂有限公司 | Quenching process of Cr12MoV roller |
| CN102921879A (en) * | 2012-10-25 | 2013-02-13 | 无锡中彩新材料股份有限公司 | Metallurgical casting mould |
| CN103397279A (en) * | 2013-07-31 | 2013-11-20 | 宁国市东方碾磨材料有限责任公司 | High-performance multi-alloy wear-resistant ball, and preparation process and thermal treatment method thereof |
| CN104152792A (en) * | 2014-08-16 | 2014-11-19 | 河北工业大学 | Ausferrite ductile cast iron grinding ball |
-
2015
- 2015-05-11 CN CN201510238032.XA patent/CN104988410A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88105047A (en) * | 1988-03-31 | 1988-12-21 | 沈阳市城区经济技术开发公司 | Brasion-and impact-resistant high-carbon manganese chromium rare-earth alloy |
| US6702905B1 (en) * | 2003-01-29 | 2004-03-09 | L. E. Jones Company | Corrosion and wear resistant alloy |
| CN101078330A (en) * | 2007-05-31 | 2007-11-28 | 霍志文 | Novel telescopic door |
| CN101985683A (en) * | 2010-11-13 | 2011-03-16 | 大连冶金工具厂有限公司 | Quenching process of Cr12MoV roller |
| CN102921879A (en) * | 2012-10-25 | 2013-02-13 | 无锡中彩新材料股份有限公司 | Metallurgical casting mould |
| CN103397279A (en) * | 2013-07-31 | 2013-11-20 | 宁国市东方碾磨材料有限责任公司 | High-performance multi-alloy wear-resistant ball, and preparation process and thermal treatment method thereof |
| CN104152792A (en) * | 2014-08-16 | 2014-11-19 | 河北工业大学 | Ausferrite ductile cast iron grinding ball |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151021 |
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| RJ01 | Rejection of invention patent application after publication |