CN107052280B - A kind of method for producing sector electrode - Google Patents
A kind of method for producing sector electrode Download PDFInfo
- Publication number
- CN107052280B CN107052280B CN201710248945.9A CN201710248945A CN107052280B CN 107052280 B CN107052280 B CN 107052280B CN 201710248945 A CN201710248945 A CN 201710248945A CN 107052280 B CN107052280 B CN 107052280B
- Authority
- CN
- China
- Prior art keywords
- mould
- molten steel
- fixed plate
- steel
- lower mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 238000005266 casting Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 17
- 206010039509 Scab Diseases 0.000 claims abstract description 6
- 238000010079 rubber tapping Methods 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 238000005422 blasting Methods 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000010813 municipal solid waste Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000005242 forging Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007528 sand casting Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The ingot mould and technique of present invention production sector electrode, belong to electroslag remelting technique field, solve high complex procedures present in prior art, production cost, production efficiency height, impurity content is high, surface scab is serious, removing surface is difficult, pours into a mould the technical problem serious compared with long electrode overall deformation；The present invention includes upper die and lower die, fixed plate and hanger；The lower mould is provided with die cavity；The die cavity is provided with the curving of castings；The hanger is fixedly connected on mould, and fixed plate is equipped with upper die and lower die, has gap between the fixed plate of upper die and lower die；The method of the present invention comprises the following steps：Melting molten steel；Molten steel is tilted and poured into the mould of the present invention；The demoulding.
Description
Technical field
The invention belongs to electroslag remelting technique field, and in particular to a kind of method for producing sector electrode.
Background technology
At present, the consutrode for obtaining electroslag remelting includes following methods：Rolling；Forging processing and forging type；Casting
Making mode includes sand casting and die cast.
Different steel ingots are forged first using forging or rolling mode processing consutrode, forging is also tackled after forging
It is machined by given size；Complex procedures, high material consumption, the high technological deficiency of cost be present；
, there is inner clamps debris in the method for the consutrode of sand casting production and gas content is high, and surface scab is serious,
Removing surface is difficult, pours into a mould the technological deficiency serious compared with long electrode overall deformation；
Swage pours into a mould electrode bar, and conventional process is one set of die, can only once pour and outpour an electrode bar, production
Efficiency is low.
The content of the invention
It is an object of the invention to provide a kind of method for producing sector electrode, solves process present in prior art and answers
It is miscellaneous, production cost is high, low production efficiency, impurity content are high, surface scab is serious, removing surface is difficult, pours into a mould whole compared with long electrode
Body deforms serious technical problem.
In order to solve the above technical problems, the present invention provides following technical scheme：
A kind of method for producing sector electrode of the present invention, this method use a kind of ingot mould, the ingot mould including upper mould, under
Mould, fixed plate, steady pin and hanger；The lower mould is provided with die cavity；The die cavity is provided with the curving of castings；The hanger, which is fixed, to be connected
It is connected on mould, is equipped with fixed plate on upper die and lower die, the fixed plate on upper mould is integrated with upper mould, the fixed plate on lower mould
It is integrated with lower mould, upper die and lower die are fixed by steady pin, have gap between the fixed position of the fixed plate of upper die and lower die,
Upper mould is provided with upper mould positioning inclination angle, and lower mould is provided with lower mould positioning inclination angle, the upper mould positioning inclination angle and lower mould positioning inclination angle
It it is 25 °, the scope of the curving of castings is：5 ° -7 °, the gap between the fixed position of the fixed plate of the upper die and lower die
For 260mm, the thickness of the fixed plate is 50mm, width 60mm；
This method comprises the following steps：
Step 1：Shot Blasting is carried out to the steel scrap of intermediate frequency (IF) smelting, surface scale, scab are removed；
Step 2：Molten steel will be carried out in steel scrap input intermediate frequency furnace after progress Shot Blasting in step 2；
Step 3：In step 2 molten steel to the later stage refining period when, according to stokehold molten steel component analysis result, adjust
Whole chemical composition, and carry out 4-6 slag making, take off slag operation, reduce the field trash and gas content of molten steel；
Step 4：Steel ladle in intermediate frequency furnace is fully toasted, baking temperature scope is：600℃--700℃；
Step 5：Ingot mould is preheated, preheating temperature scope is：150--200℃；
Step 6：After liquid steel temperature reaches 1650 DEG C -1680 DEG C, tapped, added into steel ladle during tapping dilute
Native refined alloy, rare-earth refining alloy addition are 4Kg/ ton molten steel, and final purification is carried out to molten steel and forces deoxidation, further
Improve the degree of purity of molten steel；
Step 7：Molten steel calm 2-3 minutes in steel ladle after tapping, ensure nonmetallic in the molten steel that brings during tapping
Field trash fully floats；
Step 8：By in the pouring molten steel in the ladle after calmness to tilted-putted ingot mould；
Step 9：Steel ingot after cast is stripped after sufficiently cool solidification；
Wherein, cast use exhaust outlet be higher than gate end inclined casting and angle of inclination scope for：4°-6°；Steel
The length of ingot mould is longer than electrode length by 3.5%.
The advantageous effects of the present invention：Using the piece Ingot Mold of the type of a mould two, i.e. once-cast can produce two
Branch sector electrode rod, the sectional area of electrode is increased, improves the relative cylinder charge of electroslag remelting, and improve operating efficiency, reduced
Production cost；Inclined casting is carried out using the angle of inclination of 4--6 degree, degree of filling of the molten steel in die cavity is not only ensure that, also has
Beneficial to the exhaust in casting process；Die cavity section is small, and the curving of castings is big, is easy to be stripped；For die cavity in lower mould, die joint is fan
The upper surface of shape electrode, the quality of cast sector electrode is ensure that, eliminate the casting flaws such as overlap on die joint, and be easy to
The demoulding；Upper and lower mould both sides are provided with fixed plate, and the handle for carrying out upper and lower mould closes, between the fixed position of the fixed plate of upper die and lower die
Gap is 260mm, effectively prevent the phenomenon for occurring swell in casting process；The thickness of fixed plate is 50mm, and width is
60mm；It is 260mm conjunction line space design, ensure that the intensity case power and fixed plate；
Steel-making uses gas shield intermediate frequency furnace, reduces the pernicious gas content in steel；Steel scrap is using material is returned, to surface
Impeller blasting is carried out, reduces harmful non-metallic inclusion content of molten steel；Rare-earth refining alloy is used during tapping, molten steel is entered
Row is further to force deoxidation, reduces the oxygen content of molten steel, and can further reduce field trash, refines the crystal grain of electrode
Degree.
Brief description of the drawings
Fig. 1 is the front view for the ingot mould that the present invention produces fan-shaped ESR ingot；
Fig. 2 is the left view for the ingot mould that the present invention produces fan-shaped ESR ingot；
Fig. 3 is the graphics for the ingot mould that the present invention produces fan-shaped ESR ingot；
Fig. 4 is the flow chart of the method for present invention production sector electrode；
Wherein, 1, hanger, 2, upper mould, 3, lower mould, 4, steady pin, 5, hanger fixed form, 6, upper mould positioning inclination angle, 7, solid
Fixed board, 8, die cavity, 9, the curving of castings, 10, lower mould positioning inclination angle.
Embodiment
The present invention is further elaborated below in conjunction with the accompanying drawings.
Specific embodiment one：
Referring to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, a kind of method for producing sector electrode of the present invention, this method uses
A kind of ingot mould, the ingot mould include upper mould 2, lower mould 3, fixed plate 7, steady pin 4 and hanger 1；
The lower mould 3 is provided with die cavity 8；The die cavity 8 is provided with the curving of castings 9；The hanger 1 is fixedly connected on mould 2
On, it is equipped with fixed plate 7 on upper mould 2 and lower mould 3, the fixed plate on upper mould is integrated with upper mould, and the fixed plate on lower mould is with
Mould is integrated, and upper mould 2 and lower mould 3 are fixed by steady pin 4, between having between the fixed position of the fixed plate of upper mould 2 and lower mould 3
Gap between the fixed position of the fixed plate of gap, upper mould 2 and lower mould 3 is 260mm；Upper mould 2 is provided with upper mould positioning inclination angle 6,
Lower mould 3 is provided with lower mould positioning inclination angle 10；
The upper mould positioning inclination angle 6 and lower mould positioning inclination angle 10 are 25 °；
The scope of the curving of castings 9 is：5°-7°；
The thickness of the fixed plate 7 is 50mm, width 60mm；
Positioning inclination angle on the upper mould 2 and lower mould 3 is 25 °；
Cast uses inclined casting, i.e. exhaust outlet is higher than gate end, and the scope at angle of inclination is：4°-6°；
The length of ingot mould is longer than electrode length by 3.5%；
This method comprises the following steps：
Step 1：Shot Blasting is carried out to the steel scrap of intermediate frequency (IF) smelting, surface scale, scab are removed；
Step 2：Molten steel will be carried out in steel scrap input intermediate frequency furnace after progress Shot Blasting in step 2；
Step 3：In step 2 molten steel to the later stage refining period when, according to stokehold molten steel component analysis result, adjust
Whole chemical composition, and carry out 4-6 slag making, take off slag operation, reduce the field trash and gas content of molten steel；
Step 4：Steel ladle in intermediate frequency furnace is fully toasted, baking temperature scope is：600℃-700℃；
Step 5：Ingot mould is preheated, preheating temperature scope is：150-200℃；
Step 6：After liquid steel temperature reaches 1650 DEG C -1680 DEG C, tapped, added into steel ladle during tapping dilute
Native refined alloy, rare-earth refining alloy addition are 4Kg/ ton molten steel, and final purification is carried out to molten steel and forces deoxidation, further
Improve the degree of purity of molten steel；
Step 7：Molten steel calm 2-3 minutes in steel ladle after tapping, ensure nonmetallic in the molten steel that brings during tapping
Field trash fully floats；
Step 8：By in the pouring molten steel in the ladle after calmness to tilted-putted ingot mould；
Step 9：Steel ingot after cast is stripped after sufficiently cool solidification.
Specific embodiment two：
The present embodiment and the difference of embodiment one are that the curving of castings 9 is 5 °.
Specific embodiment three：
The present embodiment and the difference of embodiment one are that the curving of castings 9 is 7 °.
Specific embodiment four：
The present embodiment and the difference of embodiment one are that the curving of castings 9 is 6 °.
Specific embodiment five：
The present embodiment and the difference of embodiment one are that cast uses inclined casting, i.e. exhaust outlet is higher than gate end, tilt
Angle is 4 °.
Specific embodiment six：
The present embodiment and the difference of embodiment one are that cast uses inclined casting, i.e. exhaust outlet is higher than gate end, tilt
Angle is 6 °.
Specific embodiment seven：
The present embodiment and the difference of embodiment one are that cast uses inclined casting, i.e. exhaust outlet is higher than gate end, tilt
Angle is 5 °.
Specific embodiment eight：
The present embodiment and the difference of embodiment one be, step 4：Steel ladle in intermediate frequency furnace is fully toasted, dried
Roasting 600 DEG C of temperature.
Specific embodiment nine：
The present embodiment and the difference of embodiment one be, step 4：Steel ladle in intermediate frequency furnace is fully toasted, dried
Roasting temperature is 700 DEG C.
Specific embodiment ten：
The present embodiment and the difference of embodiment one be, step 4：Steel ladle in intermediate frequency furnace is fully toasted, dried
Roasting temperature is：650℃.
Specific embodiment 11：
The present embodiment and the difference of embodiment one be, step 5：Ingot mould is preheated, preheating temperature is 150 DEG C.
Specific embodiment 12：
The present embodiment and the difference of embodiment one be, step 5：Ingot mould is preheated, preheating temperature is 200 DEG C.
Specific embodiment 13：
The present embodiment and the difference of embodiment one be, step 5：Ingot mould is preheated, preheating temperature is 175 DEG C；
Specific embodiment 14：
The present embodiment and the difference of embodiment one be, step 6：When liquid steel temperature reaches 1650 DEG C, tapped.
Specific embodiment 15：
The present embodiment and the difference of embodiment one be, step 6：When liquid steel temperature reaches 1680 DEG C, tapped.
Specific embodiment 16：
The present embodiment and the difference of embodiment one be, step 6：After liquid steel temperature reaches 1665 DEG C, tapped.
Claims (1)
- A kind of 1. method for producing sector electrode, it is characterised in that this method uses a kind of ingot mould, and the ingot mould includes upper mould (2), lower mould (3), fixed plate (7), steady pin (4) and hanger (1)；The lower mould (3) is provided with die cavity (8)；On the die cavity (8) Provided with the curving of castings (9)；The hanger (1) is fixedly connected on mould (2), and fixed plate is equipped with upper mould (2) and lower mould (3) (7), the fixed plate on upper mould is integrated with upper mould, and the fixed plate on lower mould is integrated with lower mould, and upper mould (2) and lower mould (3) are logical Cross steady pin (4) to fix, there is gap between the fixed position of the fixed plate of upper mould (2) and lower mould (3), upper mould (2) is provided with upper Mould positions inclination angle (6), and lower mould (3) is provided with lower mould positioning inclination angle (10), upper mould positioning inclination angle (6) and lower mould positioning inclination angle (10) it is 25 °, the scope of the curving of castings (9) is：5 ° -7 °, the fixation of the fixed plate of the upper mould (2) and lower mould (3) Gap between position is 260mm, and the thickness of the fixed plate (7) is 50mm, width 60mm；This method comprises the following steps：Step 1：Shot Blasting is carried out to the steel scrap of intermediate frequency (IF) smelting, surface scale, scab are removed；Step 2：Molten steel will be carried out in steel scrap input intermediate frequency furnace after progress Shot Blasting in step 2；Step 3：In step 2 molten steel to the later stage refining period when, according to stokehold molten steel component analysis result, adjustmentization Study point, and carry out 4-6 slag making, take off slag operation, reduce the field trash and gas content of molten steel；Step 4：Steel ladle in intermediate frequency furnace is fully toasted, baking temperature scope is：600℃--700℃；Step 5：Ingot mould is preheated, preheating temperature scope is：150--200℃；Step 6：After liquid steel temperature reaches 1650 DEG C -1680 DEG C, tapped, add rare earth essence during tapping into steel ladle Alloy is refined, rare-earth refining alloy addition is 4Kg/ ton molten steel, and final purification is carried out to molten steel and forces deoxidation, is further improved The degree of purity of molten steel；Step 7：Molten steel calm 2-3 minutes in steel ladle after tapping, ensure the nonmetal inclusion in the molten steel that brings during tapping Thing fully floats；Step 8：By in the pouring molten steel in the ladle after calmness to tilted-putted ingot mould；Step 9：Steel ingot after cast is stripped after sufficiently cool solidification；Wherein, cast use exhaust outlet be higher than gate end inclined casting and angle of inclination scope for：4°-6°；Ingot mould Length it is longer than electrode length by 3.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248945.9A CN107052280B (en) | 2017-04-17 | 2017-04-17 | A kind of method for producing sector electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248945.9A CN107052280B (en) | 2017-04-17 | 2017-04-17 | A kind of method for producing sector electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107052280A CN107052280A (en) | 2017-08-18 |
| CN107052280B true CN107052280B (en) | 2018-04-03 |
Family
ID=59599713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710248945.9A Active CN107052280B (en) | 2017-04-17 | 2017-04-17 | A kind of method for producing sector electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107052280B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737009A (en) * | 2021-08-20 | 2021-12-03 | 鞍钢铸钢有限公司 | Preparation method of flat electrode blank |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB358730A (en) * | 1930-10-14 | 1931-10-15 | William Taylor Kitching | A machined flat jointed cast iron split ingot mould |
| JPH02160159A (en) * | 1988-12-14 | 1990-06-20 | Nissan Motor Co Ltd | Preheater for casting mold |
| CN201020523Y (en) * | 2007-01-05 | 2008-02-13 | 太原钢铁(集团)有限公司 | Electroslag remelting die steel casting die |
| CN102941322A (en) * | 2012-11-07 | 2013-02-27 | 秦皇岛核诚镍业有限公司 | Production method of corrosion resistant alloy plates and split type pouring die used by same |
| CN203843126U (en) * | 2014-05-27 | 2014-09-24 | 四川蓝星机械有限公司 | Separating and combining type ingot mold |
| CN104294171A (en) * | 2014-10-23 | 2015-01-21 | 江浦不锈钢制造有限公司 | Preparation method for austenitic stainless steel used for 316LN nuclear power |
| CN106141116A (en) * | 2015-03-31 | 2016-11-23 | 天工爱和特钢有限公司 | A kind of mold producing anistree ingot |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243196B (en) * | 2013-05-15 | 2015-10-07 | 中国科学院金属研究所 | A kind of intermediate frequency furnace adds the method that rare earth sublimate is smelted |
| CN106244899B (en) * | 2016-08-23 | 2018-02-23 | 宁国市开源电力耐磨材料有限公司 | A kind of energy-conservation smelting technology of 42CrMo |
-
2017
- 2017-04-17 CN CN201710248945.9A patent/CN107052280B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB358730A (en) * | 1930-10-14 | 1931-10-15 | William Taylor Kitching | A machined flat jointed cast iron split ingot mould |
| JPH02160159A (en) * | 1988-12-14 | 1990-06-20 | Nissan Motor Co Ltd | Preheater for casting mold |
| CN201020523Y (en) * | 2007-01-05 | 2008-02-13 | 太原钢铁(集团)有限公司 | Electroslag remelting die steel casting die |
| CN102941322A (en) * | 2012-11-07 | 2013-02-27 | 秦皇岛核诚镍业有限公司 | Production method of corrosion resistant alloy plates and split type pouring die used by same |
| CN203843126U (en) * | 2014-05-27 | 2014-09-24 | 四川蓝星机械有限公司 | Separating and combining type ingot mold |
| CN104294171A (en) * | 2014-10-23 | 2015-01-21 | 江浦不锈钢制造有限公司 | Preparation method for austenitic stainless steel used for 316LN nuclear power |
| CN106141116A (en) * | 2015-03-31 | 2016-11-23 | 天工爱和特钢有限公司 | A kind of mold producing anistree ingot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107052280A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112410650B (en) | Control method for improving low-power quality and segregation index of high-carbon chromium bearing steel | |
| CN104259415B (en) | A kind of continuous cast method of continuous cast round billets | |
| CN109112408B (en) | Manufacturing method of large-specification P92 heat-resistant steel forging | |
| CN103014534B (en) | Cast hot work die steel and processing method thereof | |
| CN105195265B (en) | Double composite wear-resistant hammerheads and its manufacturing method | |
| CN104532102A (en) | Novel manufacturing technology of large-sized carburized bearing steel G20Cr2Ni4A for wind electricity | |
| CN107350445B (en) | The production method of carburizing bearing steel G20Cr2Ni4 continuous cast round billets | |
| CN105088094A (en) | Manufacturing method of nitrogen-controlled austenitic stainless steel large forging piece | |
| Campbell | Metals fabrication: understanding the basics | |
| CN104532135A (en) | Cold work die steel and preparation method thereof | |
| CN105537549A (en) | Production method of continuous casting round billet of seamless steel tube steel at low temperature of minus 100 DEG C | |
| CN117245064A (en) | Process and equipment for controlling crystallization structure of integral casting roller | |
| CN107052280B (en) | A kind of method for producing sector electrode | |
| CN103691887A (en) | As-cast high-manganese steel liner plate casting process | |
| CN110421003A (en) | A kind of stainless steel ESR ingot heating once and rolling is become a useful person method | |
| CN110541115A (en) | Method for manufacturing austenitic stainless steel 150 short-specification continuous casting round pipe blank | |
| CN108660320A (en) | A kind of low-aluminium high titanium-type high temperature alloy electroslag remelting process | |
| CN105344949B (en) | A kind of manufacture of iron and steel by melting molds new technology | |
| CN110195194A (en) | A kind of preparation method of hot die steel | |
| CN110125356A (en) | A kind of continuous small-billet casting production method of drilling tool cored steel | |
| CN2650906Y (en) | Medium special steel pigot mould | |
| CN105568178A (en) | New manufacturing process of hot-rolled bar for carburized and quenched gear shaft of automobile transmission | |
| CN106493311A (en) | The production method of high-temperature corrosion-resistant alloy electrode ingot | |
| CN211758414U (en) | Rotary launder device for aluminum alloy casting | |
| JP6856652B2 (en) | Molds for manufacturing shaped steel in the electroslag remelting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 023, Chongqing Street, Yongji Economic Development Zone, Jilin City, Jilin Province, 132000 Patentee after: Lingyuan Technology Co.,Ltd. Address before: No. 023, Chongqing Street, Yongji Economic Development Zone, Jilin City, Jilin Province, 132299 Patentee before: JILIN WEIERTE TUNNEL EQUIPMENT CO.,LTD. |