WO2000017405A1 - Procede et appareil de traitement thermique de l'acier - Google Patents
Procede et appareil de traitement thermique de l'acier Download PDFInfo
- Publication number
- WO2000017405A1 WO2000017405A1 PCT/JP1999/004996 JP9904996W WO0017405A1 WO 2000017405 A1 WO2000017405 A1 WO 2000017405A1 JP 9904996 W JP9904996 W JP 9904996W WO 0017405 A1 WO0017405 A1 WO 0017405A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solid particles
- steel
- water
- heat treatment
- refrigerant
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
Definitions
- the present invention relates to a heat treatment method and a heat treatment apparatus for steel which are inexpensive and can obtain sufficient strength after heat treatment.
- Lead and molten salts have the advantage of having a high heat transfer coefficient and the ability to obtain high-strength steel due to the high cooling rate of steel, and are the most effective refrigerants for obtaining high-quality properties. is there.
- the use of a lead bath furnace and a molten salt furnace generates harmful gases and harmful substances such as lead oxide, which is not preferable from the viewpoint of generating pollution.
- a main object of the present invention is to provide a low-cost and environmentally friendly heat treatment method and apparatus for a pollution-free steel utilizing a refrigerant having a high heat transfer coefficient.
- the present invention achieves the above object by cooling steel in a mixture of solid particles and water.
- the mixture may be in a suspended state in which solid particles are dispersed in water, but it is preferable to precipitate the solid particles in water and cool the steel in the sedimentary layer. It is more effective.
- a refractory material that has a high thermal conductivity and does not deteriorate even when it comes into contact with steel at about 900 to 1000 ° C is preferable.
- Oxides are particularly suitable. More specifically, selected from A 1 2 0 3, CaO, MgO, S i 0 2, Z r0 2, Z r0 2 'S i 0 2, B 2 0 3, FeO, Fe0 2 , and Fe 2 0 3 At least one of them was mentioned. In particular, by mixing iron oxide (FeO, Fe0 2 or Fe 2 0 3), it is effective in that it nil alteration of the refrigerant in the long-term heat treatment.
- any effect can be obtained, but considering continuous use over a long period of time, oxide-based materials are considered to be deteriorated and corroded.
- Sand is preferred.
- graphite powder may be used as the solid particles.
- Graphite powder has a low specific gravity and a high thermal conductivity, so it is particularly suitable as a refrigerant material for coiled steel wire. It is desirable to prevent aggregation of substances that have the property of aggregation, such as graphite powder, by adding a surfactant.
- the specific gravity of the solid particles is desirably 1.0 or more. If the specific gravity is less than 1.0, the solid particles float on the water, making it difficult for the steel to pass through the particles.
- the upper limit of the specific gravity is preferably set to 5.0. If it exceeds 5.0, it becomes difficult to insert and transport steel into solid particles. In particular, when heat treatment is performed on a coiled steel wire, it becomes difficult to insert and transport the steel wire into solid particles. More preferably, the upper limit of the specific gravity of the solid particles is 3.0. You. It should be noted that even if the material has a large specific gravity, a refractory whose weight per unit volume is reduced by being formed in a hollow may be used as solid particles.
- the particle size of the solid particles is desirably 80 wt% or more and the particle size is l.Omm or less. If the particle size exceeds 1 mm, the space where water can directly contact the steel becomes large, and a cooling effect due to nucleate boiling of water may appear to generate martensite, which is not preferable.
- the average particle size of the solid particles is preferably 150 / XD1 or less. By setting the length to 150 m or less, steel can be easily inserted and transported even with solid particles whose specific gravity is close to 5.0. It is more preferably ⁇ ⁇ or less.
- the lack of water around the steel can reduce the cooling rate and improve the strength variation in the longitudinal direction of the steel.
- a heat treatment device that has a liquid tank that stores water and a solid particle tank that is divided by a mesh in the liquid tank and that is loaded with solid particles. This mesh is structured with finer openings than the size of the solid particles. Then, cooling is performed by inserting steel into a mixture of solid particles and water in the solid particle tank.
- the insertion depth of steel into the mixture of solid particles and water shall be within 40 cm.
- the mesh is formed with openings finer than the particle size of the solid particles, so that the solid particles do not spill out of the mesh. Therefore, the solid particle tank is composed of a mixture of solid particles and water, and the liquid layer is composed of only water.
- the material of the mesh is not particularly limited as long as it can hold solid particles. Stainless steel or the like is preferred.
- Means for stirring include rotating a fin with a fin in a liquid tank or forming a water flow with a pump. By stirring the water in the liquid tank, water permeation into the solid particle tank is promoted, and water shortage around the steel is suppressed.
- the insertion depth of the steel into the mixture of the solid particles and water is more preferably 25 cm or less, and further preferably 10 cm or less. This is because the deeper the insertion depth, the more difficult it is to supply water around the steel in the solid particle layer.
- Configuration 3 forms a water flow between solid particles to prevent water shortage around the steel.
- a pipe-shaped ejection port is arranged below the solid particles, and water is supplied from the ejection port toward the solid particles.
- the solid particles do not flow, but a water flow is formed between the solid particles to suppress water deficiency around the steel.
- a water flow is formed between the solid particles, but also the solid particles themselves may flow.
- a mesh-shaped outlet having a large number of small holes is provided below the solid particles, and water is supplied from the outlet.
- the fluidization method includes the supply of water, steam, air, etc.
- steam or air is not preferable because a space for steam or air is formed between solid particles.
- a stable heat treatment can be performed only by fluidizing by supplying water.
- water in the refrigerant includes hot water.
- the preferred water temperature is 50 ° C. or higher, more preferably 70 ° C. or higher, and even more preferably 90 ° C. or higher. If the temperature is lower than 50 ° C, martensite may be generated. If the water temperature is set to 90 ° C or higher, the change in water temperature due to the steel temperature can be suppressed as much as possible, and stable heat treatment can be performed.
- the heat treatment method of the present invention may be performed either offline or in-line directly to the rolled steel material.
- the shape to be heat-treated can be applied to any shape such as a plate and a wire. In particular, it is optimal for wire rods.
- the heat treatment apparatus is a heat treatment apparatus in which steel is immersed in a coolant tank, wherein the coolant tank includes a liquid tank in which water is stored, and a mesh in the liquid tank. And a solid particle tank filled with solid particles, wherein the mesh is configured to have openings smaller than the particle diameter of the solid particles.
- FIG. 1 is an explanatory diagram of the heat treatment method of the present invention.
- FIG. 2 is an explanatory diagram of the heat treatment method of the present invention.
- FIG. 3 is a graph showing the relationship between the cooling rate, the refrigerant temperature, and the presence or absence of martensite.
- FIG. 4 (a) is a schematic view of a heat treatment apparatus using zircon sand and water as a refrigerant, (b) is a schematic view of the heat treatment apparatus of the present invention in which zircon sand and water are divided by a mesh, and (c) is (b).
- FIG. 2 is a schematic view of a heat treatment apparatus of the present invention for stirring water in a liquid tank in addition to the apparatus of FIG.
- FIG. 5 is a graph showing the tensile strength distribution in the longitudinal direction of the steel wire heat-treated by each of the devices shown in FIGS. 4 (a) to 4 (c).
- FIG. 6 is a graph showing the relationship between the difference in the depth at which a steel wire is inserted into a mixture of zircon sand and water and the tensile strength distribution in the longitudinal direction of the steel wire.
- FIG. 7 is a schematic view of the apparatus of the present invention for supplying water to zircon sand.
- FIG. 8 is a graph showing the tensile strength distribution in the longitudinal direction of the steel wire when water is supplied to the zircon sand using the apparatus shown in FIG.
- FIG. 9 is a schematic diagram of the apparatus of the present invention for flowing zircon sand.
- FIG. 10 is a graph showing the tensile strength distribution in the longitudinal direction of the steel wire when the zircon sand is flowed using the apparatus of FIG. 9 and when it is not. The explanation of the sign is as follows.
- 1 heating furnace
- 2 refrigerant tank
- 3 steel wire
- 4 water
- 5 is sand
- 1 1 is boiling water
- 1 2 Is solid particles
- 13 is steel wire
- 21 is zircon sand
- 22 is water
- 23 is mesh
- 24 is solid particle tank
- 25 is liquid tank
- 26 is high carbon steel wire
- 27 is pipe, 28 small hole.
- An off-line patterning process is performed by heating a ⁇ 11.5 mm carbon steel wire containing C: 0.80 wt%, Si: 0.22 wt%, and Mn: 0.73 wt%, and then cooling it under the following two conditions.
- a ⁇ 11.5 mm carbon steel wire containing C: 0.80 wt%, Si: 0.22 wt%, and Mn: 0.73 wt% and then cooling it under the following two conditions.
- a refrigerant tank 2 is provided immediately after the heating furnace 1, and the steel wire 3 heated in the heating furnace 1 is introduced into the refrigerant tank 2.
- Water 4 and sand 5 are put in the refrigerant tank 2, and the sand 5 is kept in a state of being settled in the water.
- the heating temperature of the steel wire 3 in the heating furnace 1 is 950 ° C and the water 4 is hot water of 97 ° C, and the heated steel wire 3 is introduced into the precipitated sand and cooled (Example 1).
- the main component of the sand is Zr0 2 (Jirukonia).
- a steel containing C: 0.80 wt%, Si: 0.22 t%, and Mn: 0.73 wt% was rolled into a ⁇ 11.5 mm wire, and this wire was immediately introduced into the refrigerant tank under condition (1) of Test Example 1.
- Inline patenting was performed.
- the strength was 1225 N / mm 2 , and the same strength as that of off-line patenting was obtained. This indicates that the method of the present invention can be applied to direct heat treatment after rolling.
- a refrigerant tank 2 is provided immediately after the heating furnace 1, and the steel wire 3 heated in the heating furnace 1 is introduced into the refrigerant tank 2.
- the refrigerant tank 2 contains water 4 and solid particles 5 as a refrigerant, and the solid particles 5 are maintained in a state of being precipitated in water.
- the steel wire 3 introduced into the coolant tank 2 is heat-treated through the precipitated solid particles
- Example 2-1 As is evident from Table 1, the lead patent of Comparative Example 2-1 was used for both Examples 2-2-2. The strength was almost equivalent to that of the ring. It can be seen that any of the solid particles used in the test is effective. Also, it can be seen that Example 2-1 in which solid particles are precipitated is more effective in improving strength than Example 2-2 in which solid particles are dispersed in water. Therefore, according to the method of the present invention, it can be seen that strength equivalent to lead patenting can be obtained. - ⁇ Test Example 4>
- the specific gravity using a Z r0 2 of 5.6 to solid particles it was not possible to insert the steel wire. Also, if the specific gravity had use the A 1 2 0 3 of 3.9 to solid particles, the average particle diameter can be inserted a steel wire when: 0.99 m was confirmed. Furthermore, if the specific gravity of the S i 0 2 of 2.2 and the solid particles were found to perform insertion Razz readily steel wire involved in particle size. Therefore, it is understood that the specific gravity of the solid particles is preferably 5.0 or less, and the particle diameter is desirably 150 // m or less. In addition, all the particles showed a strength of 1228 to 1232 MPa, which was equal to or higher than the strength of 1222 MPa for lead patented wire of the same diameter. The upper strength is shown.
- the steel wire of 11.5 was formed into a coil shape, introduced into a refrigerant under the following conditions (1) to (4), and heat-treated.
- the tensile strength of the heat-treated steel wire was measured.
- Graphite powder with a specific gravity of 2.2 and an average particle size of 400 m was used as the solid particles.
- the temperature of the steel wire when the refrigerant was introduced was 900 ° C, the water temperature was 97 ° C, and the relative speed between the refrigerant and the steel wire was about 50 cmZ sec.
- condition 1 was 1232 MPa
- condition 2 was 1242 MPa
- condition 3 was 1235 MPa
- condition 2 was 1222 MPa
- all the conditions 1 to 3 of the method of the present invention were better than the condition 1 of the comparative example.
- graphite powder is more effective when precipitated than when dispersed. In condition (3), no aggregation of the graphite powder was observed due to the effect of the surfactant.
- the cooling rate was evaluated by changing the temperature of the mixed solution of graphite powder and water.
- the temperature of the steel wire when the refrigerant was charged was 900 ° (:, the relative speed between the refrigerant and the steel wire was about 50 cm / sec.
- the result is shown in the graph of Fig. 3.
- the refrigerant temperature Is below 50 ° C the cooling rate is high, and the generation of martensite is observed.
- the refrigerant temperature is 90 ° C or higher, the cooling rate is stable.
- Si0 2 and A1 2 0 3 hollow particles composed mainly of (commercially available as refractory: specific gravity 0.7) is dispersed in boiling water, this as a refrigerant, similar to the steel wire in Test Example 6 in the refrigerant For cooling.
- the temperature of the steel wire when the refrigerant is introduced is 900 ° C, and the relative speed between the refrigerant and the steel wire is about 50 cmZsec.
- the tensile strength after the heat treatment was measured, it was found to be 1221 MPa, a high strength corresponding to a lead patenting material.
- FIG. 4 shows a schematic diagram of the heat treatment apparatus of the present invention.
- the equipment of (a) is installed in the heat treatment tank.
- Particle size 0. 1 to 0. 3 mm zircon sand 1 (Z r0 2 'S i 0 2) put in, in which precipitated in water 22 of 97 ° C.
- the heat treatment apparatus is divided into a solid particle tank 24 on the inside and a liquid tank 25 on the outside by a mesh of mesh 0.023.
- Solid particles vessel 24, a particle diameter 0. 1 to 0 3 mm zircon sand 21. (Zr0 2 - S i 0 2) placed, are precipitated into the 97 ° C water 22.
- the device shown in (C) differs from the device in (b) in that the water 22 outside the mesh 23 is stirred by a stirrer (not shown).
- FIG. 7 shows a schematic diagram of the heat treatment apparatus of the present invention.
- water 22 and zircon sand 1 are loaded into a heat treatment tank, and zircon sand 1 is precipitated in the water 22.
- a plurality of pipes 27 are arranged in parallel at the bottom of the heat treatment layer, and water (97 ° C) is constantly supplied from each pipe 2 to the zircon sand 21.
- water 97 ° C
- water is forcibly supplied between the zircon sand particles, and a water flow is formed between the particles.
- the same experiment as in Test Example 10 was performed using this heat treatment tank.
- a heat treatment was similarly performed on an apparatus without water supply from the pipe 27, and the strength of the steel wire after the treatment was measured.
- Fig. 8 shows the results. It is clear that stable high strength can be obtained by this method.
- FIG. 9 shows a schematic diagram of the heat treatment apparatus of the present invention.
- water 22 and zircon sand 21 are charged into a heat treatment tank, and zircon sand 21 is precipitated in water 11.
- a large number of small holes 28 are formed on almost the entire surface, and water is jetted from the small holes 28 to flow the zircon sand 21.
- a prototype was produced in the same manner as in Test Example 10.
- a heat treatment was similarly performed on an apparatus in which the zircon sand 21 did not flow, and the strength of the steel wire after the treatment was measured.
- Figure 10 shows the results. It can be seen that stable high strength can be obtained by the method of the present invention.
- the base metal containing 0.82wt was hot-rolled to ⁇ 11.5mm, and the non-concentric ring-shaped rolled wire was directly heat-treated under the following conditions.
- the refrigerant was a mixture of solid particles and water, and the refrigerant temperature was 97 ° C.
- the solid particles zirconium Nia (Zr0 2), zircon (Zr0 2 'Si0 2), alumina (A 1 2 0 3), using four kinds of silica (Si0 2).
- the average size of each solid particle is about 200 / im. These fixed particles are precipitated in water. Warm water of the same temperature was blown out from the lower part of the cooling tank to flow the solid particles.
- the wire was inserted into the cooling bath without resistance.
- Ma the obtained strength was 1230 to 1250 MPa, irrespective of the type of solid particles, and was equivalent to the case where lead patterning was performed.
- a high-strength steel material can be obtained at low cost and without pollution. Also, by specifying the particle size of the solid particles, it is possible to suppress the generation of nucleate boiling and the generation of martensite. Furthermore, by specifying the specific gravity of the solid particles or fluidizing the solid particles in water, it is possible to easily insert a coil-shaped wire rod into a refrigerant. It is applicable to direct heat treatment after rolling and off-line heat treatment, and is effective for patenting wire.
- a low cost and environmentally friendly non-polluting heat treatment can be performed using a refrigerant having a high heat transfer coefficient.
- a refrigerant having a high heat transfer coefficient.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/786,430 US6471798B1 (en) | 1998-09-18 | 1999-09-13 | Method and apparatus for heat treating steel |
| EP99943319A EP1126038A4 (en) | 1998-09-18 | 1999-09-13 | METHOD AND DEVICE FOR HEAT TREATING STEEL |
| CA002343305A CA2343305A1 (en) | 1998-09-18 | 1999-09-13 | Method and apparatus for heat treating steel |
| BR9913830-1A BR9913830A (pt) | 1998-09-18 | 1999-09-13 | Processo e aparelho para o tratamento térmico de aço |
| KR1020017003435A KR20010075165A (ko) | 1998-09-18 | 1999-09-13 | 강철의 열처리방법 및 열처리장치 |
| AU56504/99A AU755695B2 (en) | 1998-09-18 | 1999-09-13 | Method and apparatus for heat treating steel |
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10/264135 | 1998-09-18 | ||
| JP26413598 | 1998-09-18 | ||
| JP11/11847 | 1999-01-20 | ||
| JP1184799 | 1999-01-20 | ||
| JP1184999 | 1999-01-20 | ||
| JP11/11849 | 1999-01-20 | ||
| JP11/199521 | 1999-07-13 | ||
| JP19952199 | 1999-07-13 | ||
| JP25324299A JP2001081515A (ja) | 1998-09-18 | 1999-09-07 | 鋼の熱処理方法および熱処理装置 |
| JP11/253242 | 1999-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000017405A1 true WO2000017405A1 (fr) | 2000-03-30 |
Family
ID=27519337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1999/004996 Ceased WO2000017405A1 (fr) | 1998-09-18 | 1999-09-13 | Procede et appareil de traitement thermique de l'acier |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6471798B1 (ja) |
| EP (1) | EP1126038A4 (ja) |
| JP (1) | JP2001081515A (ja) |
| KR (1) | KR20010075165A (ja) |
| CN (1) | CN1105190C (ja) |
| AU (1) | AU755695B2 (ja) |
| BR (1) | BR9913830A (ja) |
| CA (1) | CA2343305A1 (ja) |
| WO (1) | WO2000017405A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1277845A1 (en) * | 2000-07-26 | 2003-01-22 | The BOC Group plc | Quenching method |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101023232B1 (ko) * | 2009-02-03 | 2011-03-21 | 한국원자력연구원 | 모사 크러드 형성용 핵연료 피복관, 모사 크러드 형성용 핵연료 피복관의 제조방법 및 모사 크러드 형성용 핵연료 피복관이 구비되는 모사 크러드 형성장치 |
| KR200458151Y1 (ko) * | 2009-06-05 | 2012-01-20 | 김병수 | 다용도 바퀴 |
| CN104404209B (zh) * | 2014-12-11 | 2016-07-06 | 山东大学 | 金刚石型固体淬火冷却介质及制备方法和应用 |
| TWI568884B (zh) * | 2015-04-08 | 2017-02-01 | 新日鐵住金股份有限公司 | Zn-Al-Mg系鍍敷鋼板及Zn-Al-Mg系鍍敷鋼板之製造方法 |
| CN105274292B (zh) * | 2015-11-27 | 2018-01-12 | 武汉理工大学 | 一种中低碳钢水‑沙淬火介质及其淬火工艺 |
| WO2019239184A1 (en) | 2018-06-13 | 2019-12-19 | Arcelormittal | Vacuum deposition facility and method for coating a substrate |
| WO2019239186A1 (en) | 2018-06-13 | 2019-12-19 | Arcelormittal | Vacuum deposition facility and method for coating a substrate |
| WO2020012221A1 (en) * | 2018-07-11 | 2020-01-16 | Arcelormittal | Method of heat transfer and associated device |
| WO2020012222A1 (en) * | 2018-07-11 | 2020-01-16 | Arcelormittal | Method to control the cooling of a metal product |
| JP7815172B2 (ja) * | 2023-04-05 | 2026-02-17 | 株式会社ヨータイ | ジルコン質鋳込み品の製造方法及びジルコン質鋳込み品 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839727A (ja) * | 1981-09-02 | 1983-03-08 | Toray Eng Co Ltd | 金属熱処理における加熱金属の冷却方法 |
| JPH0364421A (ja) * | 1989-08-02 | 1991-03-19 | Sumitomo Metal Ind Ltd | 線材等の流動冷却装置 |
| JPH06229681A (ja) * | 1993-02-02 | 1994-08-19 | Toray Ind Inc | 線または帯状物処理用流動床装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3203470A (en) * | 1963-07-01 | 1965-08-31 | British Aluminium Co Ltd | Method of rapidly cooling solid bodies |
| GB1312527A (en) * | 1969-08-19 | 1973-04-04 | Centre Rech Metallurgique | Treatment of steel rod or wire |
| BE762838A (fr) * | 1971-02-11 | 1971-08-11 | Centre Rech Metallurgique | Procede et dispositif pour la fabrication de ronds a beton, |
| FR2368544A1 (fr) * | 1976-10-19 | 1978-05-19 | Pechiney Aluminium | Trempe dans des suspensions aqueuses de poudres minerales |
-
1999
- 1999-09-07 JP JP25324299A patent/JP2001081515A/ja active Pending
- 1999-09-13 BR BR9913830-1A patent/BR9913830A/pt not_active Application Discontinuation
- 1999-09-13 US US09/786,430 patent/US6471798B1/en not_active Expired - Fee Related
- 1999-09-13 AU AU56504/99A patent/AU755695B2/en not_active Ceased
- 1999-09-13 CN CN99810937A patent/CN1105190C/zh not_active Expired - Fee Related
- 1999-09-13 KR KR1020017003435A patent/KR20010075165A/ko not_active Withdrawn
- 1999-09-13 WO PCT/JP1999/004996 patent/WO2000017405A1/ja not_active Ceased
- 1999-09-13 CA CA002343305A patent/CA2343305A1/en not_active Abandoned
- 1999-09-13 EP EP99943319A patent/EP1126038A4/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839727A (ja) * | 1981-09-02 | 1983-03-08 | Toray Eng Co Ltd | 金属熱処理における加熱金属の冷却方法 |
| JPH0364421A (ja) * | 1989-08-02 | 1991-03-19 | Sumitomo Metal Ind Ltd | 線材等の流動冷却装置 |
| JPH06229681A (ja) * | 1993-02-02 | 1994-08-19 | Toray Ind Inc | 線または帯状物処理用流動床装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1126038A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1277845A1 (en) * | 2000-07-26 | 2003-01-22 | The BOC Group plc | Quenching method |
| US6648997B2 (en) | 2000-07-26 | 2003-11-18 | The Boc Group, Plc | Quenching method |
Also Published As
| Publication number | Publication date |
|---|---|
| US6471798B1 (en) | 2002-10-29 |
| AU755695B2 (en) | 2002-12-19 |
| BR9913830A (pt) | 2001-10-16 |
| CN1318109A (zh) | 2001-10-17 |
| CN1105190C (zh) | 2003-04-09 |
| EP1126038A4 (en) | 2004-10-06 |
| JP2001081515A (ja) | 2001-03-27 |
| AU5650499A (en) | 2000-04-10 |
| EP1126038A1 (en) | 2001-08-22 |
| KR20010075165A (ko) | 2001-08-09 |
| CA2343305A1 (en) | 2000-03-30 |
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