CN115446453B - Method for producing a coated hot-formed steel part - Google Patents

Method for producing a coated hot-formed steel part Download PDF

Info

Publication number
CN115446453B
CN115446453B CN202211138755.9A CN202211138755A CN115446453B CN 115446453 B CN115446453 B CN 115446453B CN 202211138755 A CN202211138755 A CN 202211138755A CN 115446453 B CN115446453 B CN 115446453B
Authority
CN
China
Prior art keywords
welding
wire
less
coating
hot
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
Application number
CN202211138755.9A
Other languages
Chinese (zh)
Other versions
CN115446453A (en
Inventor
杨上陆
许伟
陶武
张家志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Optics and Fine Mechanics of CAS
Original Assignee
Shanghai Institute of Optics and Fine Mechanics of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Institute of Optics and Fine Mechanics of CAS filed Critical Shanghai Institute of Optics and Fine Mechanics of CAS
Priority to CN202211138755.9A priority Critical patent/CN115446453B/en
Publication of CN115446453A publication Critical patent/CN115446453A/en
Application granted granted Critical
Publication of CN115446453B publication Critical patent/CN115446453B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/21Bonding by welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70Auxiliary operations or equipment
    • B23K26/702Auxiliary equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/02Iron or ferrous alloys
    • B23K2103/04Steel or steel alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention discloses a method for manufacturing a coated hot formed steel part, comprising the steps of: providing two steel plates which are not subjected to hot stamping, wherein at least one surface of each steel plate is coated with a coating, and the total thickness of the coating is not more than 20 mu m; in the welding process, a welding line is formed by melting, mixing and solidifying a filling welding wire and a coated steel plate, wherein the sum of the weight percentages of other alloy components except iron in the used welding wire is less than 4 percent; after welding, the welded part is punched to obtain a hot-formed steel part. According to the invention, the coating is not required to be removed before welding, and the welding joint with high strength and high elongation can be obtained only through the filler wire in the welding process, so that the safety performance of an automobile is improved.

Description

Method for producing a coated hot-formed steel part
Technical Field
The invention relates to the field of laser welding, in particular to a method for manufacturing a hot formed steel part with a coating.
Background
The current energy shortage, environmental pollution, greenhouse effect and other problems are increasingly prominent, and research results show that the proportion of transportation departments in global carbon dioxide emission is up to 24%. The adoption of the light weight technology is one of important means for realizing energy conservation and emission reduction of the automobile and improving the safety of the automobile. The ultra-high strength steel is applied to the automobile, so that the automobile safety can be realized, and the weight of the automobile body can be reduced. However, cold forming of ultra-high strength steel is difficult, and it is difficult to obtain parts of complex shape.
The hot forming steel is ultra-high strength steel with light weight and safety requirements, has the characteristics of good plasticity, strong forming capability, small rebound quantity and the like at high temperature, has strength of more than 1500MPa after hot stamping forming, and is widely applied to manufacturing of safety structural members such as A columns, B columns, beams and the like of a car body. In order to avoid oxidation of the sheet during hot stamping and to improve the surface quality and forming accuracy of the sheet, a coating is usually preformed on the surface of the sheet. The aluminum-silicon coating is the most widely used hot forming steel coating at present by virtue of the advantages of high temperature resistance, low density, abrasion resistance, high thermal conductivity, small expansion coefficient and the like. When laser welding is adopted, the coating can be melted into a welding line, more ferrite is generated, and the mechanical property of a welding joint is seriously reduced. Particularly for hot forming steels of the order of 1500MPa and above for aluminum-silicon coatings, it is very difficult to achieve post-weld tensile strength and elongation to the base material level.
In CN 114603255A a method of laser welding coated steel blanks with a filler wire is disclosed, the filling of which wire reduces the formation of brittle intermetallic compounds to a certain extent by 16-30 wt.% Cr and 6-22 wt.% Ni of the filler wire. However, this method has obvious drawbacks in that the alloy composition of the welding wire is high, increasing the cost of the welding wire. In addition, the welding seam of the welding wire with high alloy welding wire composition is poor in forming.
In CN 106488824B a method for joining two blanks is disclosed, by filling a welding wire containing 5-22 wt% Cr and 6-20 wt% Ni by using a laser arc composite welding process, the tensile strength of the joint is improved. However, this method has an excessive heat input, which tends to cause deformation of the thin plate during welding. In addition, welding wires with too high alloy components are easy to cause the failure of a welding line of a welding joint when being welded on a steel plate with a coating with the thickness of 20 mu m or less, so that the mechanical property of the joint is deteriorated.
In CN 112548395A, a welding wire for laser filler wire welding, a preparation method and a welding plate manufacturing process are disclosed, wherein the welding wire containing 0.50-0.90 wt% of C, 8-15 wt% of Ni and 3-6 wt% of Cr is filled by adopting the laser filler wire welding process, so that the tensile strength of the joint is improved. However, the welding wire has higher C and Ni contents, is easy to be unevenly distributed in the welding line, and causes poor consistency of components of the welding line and unstable mechanical property of the welding line.
In CN 113710404A a method of fusion welding one or more steel sheets made of a press hardenable steel is disclosed by using a laser beam with a combination of two spots, comprising one small spot and one large spot, the large spot being 2-3 times the small spot. The welding wire containing 4-25 wt% Cr and 5-12 wt% Ni is filled in the laser welding process, so that the welding quality is improved. However, the welding method has high requirements on laser power, and the welding wire has higher alloy component content, so that the production cost is increased.
In addition, when a hot-formed steel having a coating layer of 20 μm or less is welded with the filled welding wire, the welding joint is likely to fail in the vicinity of the weld line after hot stamping, and the elongation of the welding joint is severely reduced, so that the use standard cannot be satisfied.
Therefore, there is a need in the art to develop a welding wire that is suitable for coating hot-formed steel having a thickness of 20 μm or less, and that can also be effective in satisfying the requirements of use and ensuring consistent mechanical properties of the welded joint.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for manufacturing a hot-forming steel part with a coating, which is used for laser welding hot-forming steel with a coating thickness of 20 mu m or less, and solves the problems of poor weld forming and low extension caused by failure of a joint at a welding line due to over-high weld alloy composition.
The invention proposes a method of manufacturing a coated hot formed steel part comprising the steps of:
providing two steel plates which are not subjected to hot stamping, wherein at least one surface of each steel plate is coated with a coating, the components of the coating mainly comprise Al element, and the total thickness of the coating is not more than 20 mu m;
welding the coated steel plate, and forming a welding seam by melting, mixing and solidifying a filling welding wire and the coated steel plate in the welding process, wherein the filling welding wire contains Fe and other alloy elements, and the welding seam is characterized in that the sum of the weight percentages of the other alloy element components except Fe is less than 4%;
after the welding is completed, the welded part is subjected to hot stamping, and a hot formed steel part is obtained.
Preferably, the sum of the weight percentages of the other alloy components in the filler wire is less than 2.5%.
Preferably, after the welding piece is subjected to hot stamping, the total thickness of the coating is 6-26 mu m; the base layer is an outer layer, the compound layer is an inner layer, and an intermediate layer is arranged between the base layer and the compound layer.
Preferably, the inner layer, the intermediate layer and the outer layer are characterized as follows:
the inner layer comprises Al, si and alpha-Fe, wherein the weight percentage of the Al is less than 30 percent,
the intermediate layer is an intermetallic compound of Fe, al and Si, wherein the Al content is 52-70%,
the outer layer is an intermetallic compound of Fe, al and Si, wherein the content of Al is 30-52%.
Preferably, the total thickness of the coating is 5-14 mu m, the base layer is an Al alloy layer, and the compound layer is a FeAlSi inhibition layer.
Preferably, the other alloy components in the filler wire contain at least Cu element,
preferably, the tensile strength of the Cu element in the filler wire and the filler wire satisfy a reverse difference strength formula Td of 400-1200, and the Td calculation formula is a mathematical formula (1):
Td=1000·(0.3-a)+Ts (1)
in the formula, a is the weight percentage value of Cu element in the welding wire, and Ts is the tensile strength of the welding wire.
Preferably, the weight percentage of Cu in the filler wire is 0.18-0.5%.
Preferably, the filler wire further contains one or more of Cr, ni or Mo elements, wherein the weight percentage of Cr is less than 0.5%, the weight percentage of Ni is less than 1%, and the weight percentage of Mo is less than 0.5%.
Preferably, the sum of the weight percentages of Cr, ni and Mo in the filling welding wire is 0.1-1.48%.
Preferably, the sum of the weight percentages of Cr, ni and Mo in the filling welding wire is 0.1-1%.
Preferably, the welding wire further contains Mn and Si elements, wherein the sum of the weight percentages of Mn and Si is less than 2.5%.
Preferably, the sum of the weight percentages of Mn and Si in the filler wire is less than 1.5%.
Preferably, the weight percentage of Ti element in the filler wire is 0.01-0.5%.
Preferably, the weight percentage of Ni element in the filler wire is 0.1-0.95%.
Preferably, the weight percentage of Cr element in the filling welding wire is 0-0.48%.
Preferably, the filler wire also contains C element, and the weight percentage of the C element is 0.05-0.55.
Preferably, the weight percentage of the C element in the filling welding wire is 0.05-0.25.
Preferably, the diameter of the filler wire is 40-60 times of the total thickness of the coating.
Preferably, the percentage of the average Al element in the weld is 0.1-1.2%.
Preferably, the hot stamping refers to that the blank after the tailor-welded blank is put into a high-temperature furnace with the temperature of 700-1000 ℃ for heating in a manual or mechanical transfer mode, and is kept for 2-6 minutes, and then the high-temperature tailor-welded blank is transferred and quenched in a mechanical transfer mode.
Preferably, the quenching mode is die hot press quenching, and the die hot press quenching means that the high-temperature splice welding plate is placed on a die with a water cooling system for stamping forming.
Preferably, the quenching mode further comprises water quenching and oil quenching.
Preferably, the heat source for melting the filler wire, coating and steel plate in the welding method is an arc or a laser.
The principle of action of the welding wire for laser welding coated hot-formed steel having a thickness of 20 μm or less is as follows:
(1) The Cu element in the welding wire can obviously improve the corrosion resistance of the welding wire, and can improve the strength of the welding seam.
(2) The total content of alloy elements in the welding wire is small, and the components of the welding wire can be mixed with the base metal more uniformly in the welding process, so that segregation is reduced, and the weld joint forming is improved.
(3) The welding wire contains at least one element of Mo, cr and Ni, the Mo element can improve the hardenability and the heat strength of the welding seam, grains are thinned, the Cr element can prevent the welding seam from being oxidized during the high-temperature heat treatment, the oxidation resistance is improved, and the Ni element can effectively inhibit the formation of ferrite in the welding seam.
(4) Mn element in the welding wire can enlarge an austenite phase region and inhibit ferrite; the Si element in the welding wire can promote the flow of a molten pool; the Ti element in the welding wire improves the corrosion resistance and the welding performance of the welding wire.
Compared with the welding method in the prior art, the invention has the beneficial effects that:
1) The coating is not required to be pretreated before welding, so that the working procedures and the cost caused by the pretreatment of the coating are reduced.
2) Can realize high-efficiency and high-quality welding of hot forming steel with a coating thickness of 20 mu m or less.
3) Under high-speed welding, the stability of the mechanical property of the welded joint is high.
4) The lower alloy components in the welding wire can be more uniformly mixed with the base metal in the welding process, so that element segregation of the welding line near the welding line is reduced, the welding line forming is improved, and the stability of the mechanical property of the welding joint is improved.
5) The low alloy composition welding wire significantly reduces the production cost of the welding wire as compared to the high alloy composition welding wire.
6) The Cu element in the welding wire can improve the corrosion resistance of the welding wire and the strength of the welding seam.
7) The welding wire contains at least one element of Mo, cr and Ni, the Mo element can improve the hardenability and the heat strength of the welding seam, grains are thinned, the Cr element can prevent the welding seam from being oxidized during the high-temperature heat treatment, the oxidation resistance is improved, and the Ni element can effectively inhibit the formation of ferrite in the welding seam.
8) And shielding gas is not required in the welding process, so that the welding cost is reduced.
By using the technical scheme of the invention, the laser welding joint performance application requirements of the hot forming steel with the thickness of 20 mu m and below and the coating with the thickness of 1500MPa level and above can be met. On the premise of ensuring welding quality, the welding efficiency and the safety performance of the vehicle can be improved, and the production cost is reduced.
Drawings
The foregoing and other aspects of the invention will be better understood when read in conjunction with the following drawings. It is to be noted that the drawings are merely examples of the claimed invention.
Fig. 1 shows stress-strain curves of a typical weld joint 1, a weld joint 2, and a weld joint of comparative example 1 in the examples of the present invention.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the present invention, the present invention will be further described in detail with reference to examples. The examples are only intended to illustrate the features and technical advantages of the present invention and do not limit the scope of the present invention.
Coating characteristics of coated steel sheet
At least one surface of the steel plate is coated with a coating layer containing Al element, and the total thickness of the coating layer is not more than 20 mu m;
after hot stamping, the total thickness of the coating is 6-26 mu m; the basic layer is an outer layer, the compound layer is an inner layer, and an intermediate layer is arranged between the basic layer and the compound layer.
The inner layer, intermediate layer and outer layer are characterized as follows:
the inner layer comprises Al, si and alpha-Fe, wherein the weight percentage of Al is less than 30 percent,
the intermediate layer is an intermetallic compound of Fe, al and Si, wherein the Al content is 52-70%,
the outer layer is an intermetallic compound of Fe, al and Si, wherein the content of Al is 30-52%.
Preferably, two hot stamped coated hot formed steel sheets are provided, at least one surface of the hot formed steel sheet is coated with a coating layer, the total thickness of the coating layer is 5-14 μm, the base layer is an Al alloy layer, and the compound layer is a FeAlSi inhibition layer.
Example 1:
a method of manufacturing a component of aluminum silicon coated hot formed steel comprising the steps of:
s1, taking two non-punched hot-formed steel plates with coatings, wherein the thickness of each steel plate is 1.4mm, the total thickness of the coatings of the steel is 13-17 mu m, and the microstructure of a steel matrix mainly comprises ferrite and pearlite;
s2, selecting a welding wire with the weight ratio of alloy elements except iron being 2-3%; the weight ratio of Cu element in the alloy element is 0.18-0.5%, the sum of the weight ratio of Ni, cr and Mo elements is less than 1%, and the sum of the weight ratio of Mn and Si elements is less than 1.5%;
s3, using the welding wire as a filling welding wire, and forming a welding line by melting, mixing and solidifying the filling welding wire and a coated steel plate in the welding process, wherein the welding speed is 2.4m/min;
s4, placing the joined steel plates into a high-temperature furnace at 930-950 ℃ for heating, preserving heat for 3-5 min, and then transferring to quenching.
Example 2: unlike example 1, the welding speed was 1.75 times that of example one.
Example 3: unlike example 1, the chemical composition content of the welding wire is as follows: 0.09 wt% C,0.56 wt% Si,1.82 wt% Mn,0.55 wt% Ni+Mo, the balance being Fe and unavoidable impurities.
Example 4: unlike example 1, the chemical composition content of the welding wire is as follows: 0.08 wt% of C,0.58 wt% of Si,1.65 wt% of Mn,0.45 wt% of Mo,0.02 wt% of Ti element, and the balance of Fe and unavoidable impurities.
Example 5: unlike example 1, the chemical composition content of the welding wire is as follows: 0.09 wt% C,0.59 wt% Si,1.52 wt% Mn,1.32 wt% Ni+Mo+Cr, the balance being Fe and unavoidable impurities.
Example 6: unlike example 1, the chemical composition content of the welding wire is as follows: 0.08 wt% of C,0.52 wt% of Si,1.45 wt% of Mn,1.35 wt% of Ni+Mo+Cr, and the balance of Fe and unavoidable impurities.
Example 7: unlike example 1, the chemical composition content of the welding wire is as follows: 0.08 wt% of C,0.63 wt% of Si,1.7 wt% of Mn,0.94 wt% of Ni+Mo,0.1 wt% of Ti element, and the balance of Fe and unavoidable impurities.
The tensile strength of the welded joint of the embodiment is more than 1400MPa, and the elongation is more than 5%.
Comparative example 1: as a comparative example of example 1, a coated hot-formed steel sheet of the same specification was used for welding, and a welding wire having a total of more than 20% by weight of alloying elements other than iron was used, and the welded joint had a tensile strength of 1387.1MPa, an elongation of 1.63% and a fracture at the weld line.
Under the conventional technical scheme in the field, it is difficult to achieve the requirements of mechanical properties of laser welded joints for hot-formed steel of 1500MPa and above with a coating thickness of 20 μm or less. The conventional technical scheme in the field has the problems that the welding seam is poor in forming and the joint is easy to fail in a welding line due to the fact that the alloy composition of the welding wire is too high. From the technical effects of the technical scheme, the welding wire can obtain the welding joint with excellent mechanical properties at different welding speeds, the tensile strength is more than 1400MPa, and the elongation is more than 5%.
Therefore, according to the embodiment and the comparative example, the technical scheme of the invention can meet the requirement of high-efficiency and high-quality welding of the hot forming steel with the coating thickness of less than or equal to 20 mu m and with the grade of 1500MPa and above, and has wide applicability and high consistency.
The terms and expressions which have been employed herein are used as terms of description and not of limitation. The use of these terms and expressions is not meant to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications are possible and are intended to be included within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.
Also, it should be noted that while the present invention has been described with reference to the particular embodiments presently, it will be appreciated by those skilled in the art that the above embodiments are provided for illustration only and that various equivalent changes or substitutions may be made without departing from the spirit of the invention, and therefore, the changes and modifications to the above embodiments shall fall within the scope of the claims of the present application as long as they are within the true spirit of the invention.

Claims (4)

1. A method of manufacturing a coated, thermoformed steel component comprising:
providing two steel plates which are not hot stamped, wherein at least one surface of the steel plates is coated with a coating containing Al element, and the total thickness of the coating is not more than 20 mu m;
welding the two non-hot stamped steel plates, and forming a welding line by melting, mixing and solidifying the filler wire, the coating and the steel plates;
after welding is completed, carrying out hot stamping on the welding piece to obtain a hot formed steel part; it is characterized in that the method comprises the steps of,
the filler wire comprises Fe and other alloy elements, wherein the sum of the weight percentages of other alloy element components except Fe is less than 4%;
other alloy elements in the filler wire at least contain Cu element;
the weight percentage of Cu element in the filler welding wire is 0.18-0.5%;
the other alloy elements in the filler wire contain one or more of Cr, ni or Mo elements, wherein the weight percentage of Cr is less than 0.5%, the weight percentage of Ni is less than 1%, and the weight percentage of Mo is less than 0.5%;
the sum of the weight percentages of Cr, ni and Mo is 0.1-1.48%;
the other alloy elements in the filler wire also contain Mn and Si elements, wherein the sum of the weight percentages of Mn and Si is less than 2.5 percent.
2. The method according to claim 1, characterized in that: the Cu element in the filler wire and the tensile strength of the filler wire meet a reverse difference strength formula T d Satisfy T of 400-less d ≤1200,T d The calculation formula is a mathematical formula (1):
T d =1000·(0.3-a)+T s (1)
wherein a is the weight percentage value of Cu element in the welding wire, T s Is the tensile strength of the welding wire.
3. The method of claim 1, wherein the other alloying elements in the filler wire further comprise 0.01-0.5 wt% of Ti.
4. The method according to claim 1, characterized in that: in the implementation of welding, the welding speed is not less than 2.4m/min.
CN202211138755.9A 2022-09-19 2022-09-19 Method for producing a coated hot-formed steel part Active CN115446453B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211138755.9A CN115446453B (en) 2022-09-19 2022-09-19 Method for producing a coated hot-formed steel part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211138755.9A CN115446453B (en) 2022-09-19 2022-09-19 Method for producing a coated hot-formed steel part

Publications (2)

Publication Number Publication Date
CN115446453A CN115446453A (en) 2022-12-09
CN115446453B true CN115446453B (en) 2024-04-12

Family

ID=84304741

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211138755.9A Active CN115446453B (en) 2022-09-19 2022-09-19 Method for producing a coated hot-formed steel part

Country Status (1)

Country Link
CN (1) CN115446453B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104994989A (en) * 2012-11-19 2015-10-21 威斯克激光拼焊板有限公司 Method for laser welding one or more workpieces of hardenable steel with a butt joint using a filler wire
CN111230301A (en) * 2019-03-29 2020-06-05 宝山钢铁股份有限公司 Method for manufacturing steel thin-wall welding and other strong parts with aluminum or aluminum alloy coating
CN111390425A (en) * 2020-03-18 2020-07-10 唐山钢铁集团有限责任公司 Welding wire for hot stamping forming Al-Si coating plate laser tailor-welding and tailor-welding method
CN113747994A (en) * 2020-07-22 2021-12-03 中国科学院上海光学精密机械研究所 Welding flux for laser tailor-welding of coated steel plate and laser tailor-welding method
CN113798669A (en) * 2021-09-27 2021-12-17 中国科学院上海光学精密机械研究所 Laser welding method for hot forming steel with coating
CN114871633A (en) * 2022-06-02 2022-08-09 马鞍山钢铁股份有限公司 Welding wire for laser welding of aluminum-silicon pre-coated steel plate, aluminum-silicon pre-coated steel plate laser tailor-welded component and production method thereof
CN114905149A (en) * 2021-02-08 2022-08-16 中国科学院上海光学精密机械研究所 Laser powder filling welding and heat treatment method for coated steel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104994989A (en) * 2012-11-19 2015-10-21 威斯克激光拼焊板有限公司 Method for laser welding one or more workpieces of hardenable steel with a butt joint using a filler wire
CN111230301A (en) * 2019-03-29 2020-06-05 宝山钢铁股份有限公司 Method for manufacturing steel thin-wall welding and other strong parts with aluminum or aluminum alloy coating
CN111390425A (en) * 2020-03-18 2020-07-10 唐山钢铁集团有限责任公司 Welding wire for hot stamping forming Al-Si coating plate laser tailor-welding and tailor-welding method
CN113747994A (en) * 2020-07-22 2021-12-03 中国科学院上海光学精密机械研究所 Welding flux for laser tailor-welding of coated steel plate and laser tailor-welding method
CN114905149A (en) * 2021-02-08 2022-08-16 中国科学院上海光学精密机械研究所 Laser powder filling welding and heat treatment method for coated steel
CN113798669A (en) * 2021-09-27 2021-12-17 中国科学院上海光学精密机械研究所 Laser welding method for hot forming steel with coating
CN114871633A (en) * 2022-06-02 2022-08-09 马鞍山钢铁股份有限公司 Welding wire for laser welding of aluminum-silicon pre-coated steel plate, aluminum-silicon pre-coated steel plate laser tailor-welded component and production method thereof

Also Published As

Publication number Publication date
CN115446453A (en) 2022-12-09

Similar Documents

Publication Publication Date Title
US20240116141A1 (en) Hot-Formed Previously Welded Steel Part with very High Mechanical Resistance and Production Method
US8066829B2 (en) Process for manufacturing stamped products, and stamped products prepared from the same
JP7383718B2 (en) Method for manufacturing strong parts such as thin-walled steel welds with aluminum or aluminum alloy plating layer
US20220168845A1 (en) Different-strength steel welding component with aluminum or aluminum-alloy plating and method for manufacturing same
CN101346480A (en) High manganese steel strips with excellent coatability and superior surface property, coated steel strips using steel strips and method for manufacturing the steel strips
WO2010085983A1 (en) Fabrication process of coated stamped parts and parts prepared from the same
CN105849305A (en) Steel sheet for hot press forming with excellent corrosion resistance and weldability, forming member, and manufacturing method therefor
JP2020522614A (en) Method for producing high strength steel parts with improved ductility, and parts obtained by said method
WO2019097729A1 (en) Al-PLATED WELDED PIPE FOR HARDENING, Al-PLATED HOLLOW MEMBER, AND PRODUCTION METHOD THEREFOR
CN113747994A (en) Welding flux for laser tailor-welding of coated steel plate and laser tailor-welding method
CN114871633B (en) Welding wire for laser welding of aluminum-silicon pre-coated steel plate, laser welding component of aluminum-silicon pre-coated steel plate and production method of welding wire
JP2003231941A (en) HOT-ROLLED STEEL SHEET SUPERIOR IN FORMABILITY AFTER WELDING, WITH HIGH STRENGTH HAVING TENSILE STRENGTH OF 780 MPa OR HIGHER, OF MAKING HEAT AFFECTED ZONE HARDLY BE SOFTENED, COLD-ROLLED STEEL SHEET WITH HIGH STRENGTH, AND SURFACE-TREATED STEEL SHEET WITH HIGH STRENGTH
WO2022165997A1 (en) Method for laser powder-filling welding and heat treatment of coated steel
CN115446453B (en) Method for producing a coated hot-formed steel part
JP7099330B2 (en) Steel Sheet, Tailored Blank, Hot Press Formed Product, Steel Tubular Tailored Blank, Hollow Hot Press Formed Product, and Steel Sheet Manufacturing Method
WO2021130602A1 (en) Pre-coated steel sheet comprising an additional coating for increasing the mechanical strength of the weld metal zone of a welded steel part prepared from said pre-coated sheet
WO2021248626A1 (en) Manganese-based plated steel plate, thermoforming method therefor, and thermoforming product thereof
CN116921862A (en) Solder for coated hot forming steel, laser welding method and welding seam thereof
JPH0726346A (en) Cold rolled dead-soft steel sheet excellent in formability after high density energy beam welding and surface treated steel sheet using this cold rolled steel sheet as starting sheet
WO2020202474A1 (en) Steel sheet, tailored blank, hot-pressed molded product, steel pipe, and hollow quenched molded product
JPH07173528A (en) Production of high strength press-formed product
JPH0726320A (en) Production of high strength press formed part
JPH07145426A (en) Production of pitting corrosion resistant steel sheet

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