CN104988396B - A kind of jib boom containing zirconium - Google Patents
A kind of jib boom containing zirconium Download PDFInfo
- Publication number
- CN104988396B CN104988396B CN201510389940.9A CN201510389940A CN104988396B CN 104988396 B CN104988396 B CN 104988396B CN 201510389940 A CN201510389940 A CN 201510389940A CN 104988396 B CN104988396 B CN 104988396B
- Authority
- CN
- China
- Prior art keywords
- jib boom
- jib
- boom
- steel
- containing zirconium
- 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
- 229910052726 zirconium Inorganic materials 0.000 title claims abstract description 19
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical group OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 8
- 229910001563 bainite Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 238000005275 alloying Methods 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a kind of jib boom containing zirconium, pass through the interior outer double-layer structure of jib boom, simultaneously, select suitable alloying element, particularly zr element is incorporated into jib boom as beneficial alloy element, so as to ensure that jib boom has good tensile strength, and cost control makes jib boom maintain good mechanical property in actual applications within the scope of rational.
Description
Technical field
The present invention relates to crane field, is to be related to a kind of jib boom containing zirconium specifically.
Background technology
Crane, refer to the device with suspension hook or other load-engaging devices hanging weight.By structure can be divided into crane span structure type crane,
Cable type crane and jib-type crane three major types, it can be divided into lifting hook crane, grab bucket crane, electromagnetism by load-engaging device and rise
The class of heavy-duty machine etc. 15, it can be divided into fixed crane, climbing crane, removable crane, radial direction according to move mode and return
Turn crane, the major class of walking crane five, can be divided into hand crane, electric crane, Hydraulic for lifting load according to type of drive
The class of machine three.Also classify according to cornering rate, support pattern, mode of operation etc..In the prior art, tensile strength 950MPa
The elementary organization of level and 1180MPa grade high-strength steel plates is tempered martensite and lower bainite.To realize the high intensity of steel, except
Organizational controls is carried out to steel, also uses the strengthening mechanisms such as precipitation strength and refined crystalline strengthening.In terms of tissue modulation, the past uses
Technique be to carry out reheating quenching-tempering heat treatment (RQ-T) after hot rolling, TMCP technologies are developed after the eighties in last century, because
This changes into the direct quenching-tempering heat treatment (DQ-T) omitted and reheat quenching, and alloying element can be reduced using the technique
Dosage and shortening production cycle.And the decrement of alloying element is advantageous to the improvement of weldability and reduces welding pre-heating temperature.
In terms of the toughness of jib boom steel, the intensity of steel is higher, and stress is bigger, and the danger of brittle fracture is got over
Greatly.Therefore, the requirement of low-temperature flexibility is proposed to high-strength steel.In terms of steel plate outward appearance, presentation quality is increasingly subject to pay attention to, for rising
For heavy-duty machine cantilever, to avoid stress concentration, also require strictly to control surface of steel plate flaw.In steel plate flatness side
Face, with good tic during to make jib boom flexible, and ensure welding groove precision, it is desirable to which sheet metal is put down
Smooth degree is strictly controlled.It is desirable to the subject matter considered：Jib boom is possessed required microstructure, select
Go out to be suitable for the alloying element of jib boom, and take into account Cost Problems；In view of the specific use of jib boom, it is necessary to strict
Control impurity content；And in Technology for Heating Processing, residual stress is larger in steel plate, plate shape problem is result in, is also increased simultaneously
Process and cost.
The content of the invention
In order to solve the problems, such as the performance of above-mentioned jib boom, the invention provides a kind of jib boom containing zirconium,
The jib boom containing zirconium makes it have excellent tensile strength by the control to microstructure.
The technical solution adopted by the present invention is：A kind of jib boom containing zirconium, the steel element of the jib boom into
Dividing includes zr element, also, the jib boom has interior outer double-layer structure, and the layer structure is bainite structure, should
Endothecium structure is wrapped up by the layer structure, and the endothecium structure has pearlitic texture.
The steel elemental composition of the jib boom is by weight percentage：0.24%~0.28% C, 0.10%
~0.18% Si, 1.05%~1.20% Mn, 1.05%~1.10% Zr, 0.10%~0.20% Ti,
0.0001%~0.001% B, 0.03%~0.05% V, the S no more than 0.001%, the P no more than 0.001%, less
In 0.10% Cu, the Mo no more than 0.10%, surplus is iron and inevitable impurity.
The Technology for Heating Processing of the jib boom is：A, steel billet is heated to 1000 with 10~12 DEG C/min firing rate
~1100 DEG C, it is incubated 60~120 minutes；B, the steel billet is made to be configured to jib boom using forming process；C, by shaping
The jib boom carries out means of isothermal quenching at 320~360 DEG C.
Alternatively, the layer structure of the jib boom is also containing 12~15% sorbite structure, the internal layer knot
Structure is also containing 8~10% sorbite structure.
Alternatively, the jib boom has 1100N/mm2~1200N/mm2Tensile strength.
It is an advantage of the invention that：Interior outer double-layer structure of the invention by jib boom, meanwhile, select suitable alloy
Element, particularly zr element are incorporated into jib boom as beneficial alloy element, so as to ensure that jib boom has
There is good tensile strength, and cost control makes jib boom maintain in actual applications within the scope of rational
Good mechanical property.
Embodiment
With reference to embodiment and comparative example, the present invention is described in more detail.
Embodiment 1：
A kind of jib boom containing zirconium, the steel elemental composition of the jib boom include zr element, also, described
Jib boom has interior outer double-layer structure, and the layer structure is bainite structure, and the endothecium structure is by the layer structure institute
Parcel, the endothecium structure have pearlitic texture.The steel elemental composition of the jib boom is by weight percentage：
0.25% C, 0.18% Si, 1.20% Mn, 1.10% Zr, 0.10% Ti, 0.0001% B, 0.05% V,
S no more than 0.001%, the P no more than 0.001%, the Cu no more than 0.10%, the Mo no more than 0.10%, surplus are iron
With inevitable impurity.The Technology for Heating Processing of the jib boom is：A, steel billet is heated with 10 DEG C/min firing rate
To 1100 DEG C, 120 minutes are incubated；B, the steel billet is made to be configured to jib boom using forming process；C, by described in shaping
Jib boom carries out means of isothermal quenching at 360 DEG C.
Embodiment 2：
A kind of jib boom containing zirconium, the steel elemental composition of the jib boom include zr element, also, described
Jib boom has interior outer double-layer structure, and the layer structure is bainite structure, and the endothecium structure is by the layer structure institute
Parcel, the endothecium structure have pearlitic texture.The steel elemental composition of the jib boom is by weight percentage：
0.24% C, 0.10% Si, 1.20% Mn, 1.05% Zr, 0.20% Ti, 0.001% B, 0.05% V, no
S more than 0.001%, the P no more than 0.001%, the Cu no more than 0.10%, the Mo no more than 0.10%, surplus be iron and
Inevitable impurity.The Technology for Heating Processing of the jib boom is：A, with 12 DEG C/min firing rate heating steel billet extremely
1000 DEG C, it is incubated 100 minutes；B, the steel billet is made to be configured to jib boom using forming process；C, will be risen described in shaping
Heavy-duty machine cantilever carries out means of isothermal quenching at 350 DEG C.The layer structure of the jib boom is also containing 15% sorbite knot
Structure, the endothecium structure is also containing 10% sorbite structure.The jib boom has 1200N/mm2Tensile strength.
Embodiment 3：
A kind of jib boom containing zirconium, the steel elemental composition of the jib boom include zr element, also, described
Jib boom has interior outer double-layer structure, and the layer structure is bainite structure, and the endothecium structure is by the layer structure institute
Parcel, the endothecium structure have pearlitic texture.The steel elemental composition of the jib boom is by weight percentage：
0.28% C, 0.15% Si, 1.20% Mn, 1.10% Zr, 0.20% Ti, 0.0001% B, 0.04% V,
S no more than 0.001%, the P no more than 0.001%, the Cu no more than 0.10%, the Mo no more than 0.10%, surplus are iron
With inevitable impurity.The Technology for Heating Processing of the jib boom is：A, steel billet is heated with 11 DEG C/min firing rate
To 1050 DEG C, 60 minutes are incubated；B, the steel billet is made to be configured to jib boom using forming process；C, will be risen described in shaping
Heavy-duty machine cantilever carries out means of isothermal quenching at 320 DEG C.The layer structure of the jib boom is also containing 12% sorbite knot
Structure, the endothecium structure is also containing 8% sorbite structure.The jib boom has 1300N/mm2Tensile strength.
Comparative example 1：
Will with constituent identical steel of the embodiment of the present invention, under other Technologies for Heating Processing, such as traditional quenching-return
Burning hot processing, the tensile strength of its jib boom obtained is only 800N/mm2, and service life is also greatly shortened.
Comparative example 2：
Using same heat treatment step, but change the component of steel of the embodiment of the present invention, then it is finally obtained
The tensile strength of jib boom is 850N/mm2。
Pass through the interior outer double-layer structure of jib boom it can be seen from embodiment 1-3 and comparative example 1 and 2, meanwhile, choosing
Select suitable alloying element, particularly zr element and introduce jib boom as beneficial alloy element, so as to ensure that
Jib boom has good tensile strength, and cost control makes jib boom in reality within the scope of rational
Good mechanical property is maintained in.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (4)
- A kind of 1. jib boom containing zirconium, it is characterised in that：The steel elemental composition of the jib boom includes zr element, Also, the jib boom has interior outer double-layer structure, the layer structure is bainite structure, and the endothecium structure is by described outer Rotating fields are wrapped up, and the endothecium structure has pearlitic texture；The steel elemental composition of the jib boom is by weight percentage：0.24%~0.28% C, 0.10%~ 0.18% Si, 1.05%~1.20% Mn, 1.05%~1.10% Zr, 0.10%~0.20% Ti, 0.0001% ~0.001% B, 0.03%~0.05% V, the S no more than 0.001%, the P no more than 0.001%, no more than 0.10% Cu, the Mo no more than 0.10%, surplus is iron and inevitable impurity.
- 2. one kind jib boom containing zirconium according to claim 1, it is characterised in that the heat treatment of the jib boom Technique is：A, steel billet is heated to 1000~1100 DEG C with 10~12 DEG C/min firing rate, is incubated 60~120 minutes；B, the steel billet is made to be configured to jib boom using forming process；C, the jib boom of shaping is subjected to means of isothermal quenching at 320~360 DEG C.
- 3. one kind jib boom containing zirconium according to claim 1, it is characterised in that the outer layer knot of the jib boom Structure is also containing 12~15% sorbite structure, and the endothecium structure is also containing 8~10% sorbite structure.
- 4. one kind jib boom containing zirconium according to claim 1, it is characterised in that the jib boom has 1100 ~1300N/mm2Tensile strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510389940.9A CN104988396B (en) | 2015-07-03 | 2015-07-03 | A kind of jib boom containing zirconium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510389940.9A CN104988396B (en) | 2015-07-03 | 2015-07-03 | A kind of jib boom containing zirconium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104988396A CN104988396A (en) | 2015-10-21 |
| CN104988396B true CN104988396B (en) | 2017-12-12 |
Family
ID=54300289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510389940.9A Active CN104988396B (en) | 2015-07-03 | 2015-07-03 | A kind of jib boom containing zirconium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104988396B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428212A (en) * | 2002-12-24 | 2003-07-09 | 西安交通大学 | Method for making composite roller ring for rolling shaped steel |
| JP2009275256A (en) * | 2008-05-14 | 2009-11-26 | Sumitomo Metal Ind Ltd | Hot rolled steel sheet and method for producing the same |
| CN101821417A (en) * | 2007-09-19 | 2010-09-01 | 住友金属工业株式会社 | Low alloy steel for high-pressure hydrogen gas environment, and container for high-pressure hydrogen |
| CN102224264A (en) * | 2008-11-24 | 2011-10-19 | 维维乐内德兰公司 | Hardening of flexible trailing arms |
| JP2015004081A (en) * | 2013-06-19 | 2015-01-08 | 新日鐵住金株式会社 | High-yield-ratio high-strength hot-rolled steel sheet which is reduced in variation of strength in coil width direction and is excellent in toughness and production method thereof |
-
2015
- 2015-07-03 CN CN201510389940.9A patent/CN104988396B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428212A (en) * | 2002-12-24 | 2003-07-09 | 西安交通大学 | Method for making composite roller ring for rolling shaped steel |
| CN101821417A (en) * | 2007-09-19 | 2010-09-01 | 住友金属工业株式会社 | Low alloy steel for high-pressure hydrogen gas environment, and container for high-pressure hydrogen |
| JP2009275256A (en) * | 2008-05-14 | 2009-11-26 | Sumitomo Metal Ind Ltd | Hot rolled steel sheet and method for producing the same |
| CN102224264A (en) * | 2008-11-24 | 2011-10-19 | 维维乐内德兰公司 | Hardening of flexible trailing arms |
| JP2015004081A (en) * | 2013-06-19 | 2015-01-08 | 新日鐵住金株式会社 | High-yield-ratio high-strength hot-rolled steel sheet which is reduced in variation of strength in coil width direction and is excellent in toughness and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104988396A (en) | 2015-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7043185B2 (en) | High manganese wear resistant steel with excellent weldability | |
| CN102433514B (en) | Low-alloy steel and preparation method thereof | |
| CN103510024B (en) | For the alloy cast steel of brake disc of high-speed train and heat treatment method thereof and the brake disc of high-speed train manufactured by this alloy cast steel | |
| CN105112774B (en) | The air-cooled hardening spring steel of the low middle carbon microalloy of high-strength tenacity and its shaping and Technology for Heating Processing | |
| CN104259361B (en) | High-carbon and high-chromium 9Cr18 martensite stainless steel shaft forging preparation technology | |
| CN102794574A (en) | Welding process for martensite heat resistant steel | |
| CN104532143A (en) | Mining large-specification and high-strength chain steel and preparation method thereof | |
| JP2014503360A (en) | Manufacturing method of foreign parts | |
| WO2015011510A9 (en) | Spot welded joint using high strength and high forming and its production method | |
| CN103205643B (en) | A kind of high hardness wear-resisting steel pipe and manufacture method thereof | |
| CN106086701A (en) | A kind of high strength martensitic PH stainless steel material and preparation method thereof | |
| CN102605145A (en) | Steel isothermal quenching-tempering cooling technology | |
| CN108004469A (en) | A kind of low-alloy high tenacity Q-P-T wear-resisting steel plates and preparation method thereof | |
| CN104668820A (en) | Production method of heat-resistant steel welding wire | |
| CN102409259A (en) | Alloy steel for braking caliper and preparation method thereof | |
| CN103789520B (en) | At the uniform velocity heat-eliminating medium and the application after forging in controlled cooling model process thereof | |
| CN102618788A (en) | Support roll with high abrasion resistant performance and manufacturing method thereof | |
| CN104988396B (en) | A kind of jib boom containing zirconium | |
| CN105861945B (en) | A kind of Gao Ge chrome molybdenum steel plate and its production method | |
| CN104988397B (en) | A kind of tungstenic jib boom | |
| CN105331794B (en) | A kind of heat-treatment technology method for high-carbon half steel material collars | |
| CN104988401B (en) | A kind of jib boom containing tantalum | |
| CN105779893B (en) | Alloy cast steel for brake disc of high-speed train and the brake disc of high-speed train that is manufactured by the alloy cast steel | |
| CN103643116B (en) | The manufacturing process of a kind of welded gas cylinder and hot-rolled steel sheet thereof | |
| CN105586536B (en) | A kind of preparation method of high-intensity and high-tenacity lamellar tissue low-carbon martensitic steels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315137 Zhejiang city of Ningbo province Yinzhou District Yunlong Town Li Yun Road No. 10 Applicant after: Li Yan Address before: Yinzhou District Gaoqiao Town Lianfeng road 315175 Zhejiang city of Ningbo Province, No. 888 Applicant before: Li Yan |
|
| CB02 | Change of applicant information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Rao Lin Inventor before: Li Yan |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171116 Address after: 312400 Shengzhou mansion, No. 37, North straight street, Shengzhou, Zhejiang Applicant after: Shengzhou Northern Star Investment Limited company of science and technology of the public record Address before: 315137 Zhejiang city of Ningbo province Yinzhou District Yunlong Town Li Yun Road No. 10 Applicant before: Li Yan |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191204 Address after: 221325 Chen Lou Zhen Chen Lou Jie, Pizhou City, Xuzhou City, Jiangsu Province Patentee after: Li Qiannan Address before: 312400 Shengzhou mansion, No. 37, North straight street, Shengzhou, Zhejiang Patentee before: Shengzhou Northern Star Investment Limited company of science and technology of the public record |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191223 Address after: 411200 north of Jili East Road, Jiuhua Economic Development Zone, Xiangtan City, Hunan Province Patentee after: Hunan Zhongshi Machine Co., Ltd. Address before: 221325 Chen Lou Zhen Chen Lou Jie, Pizhou City, Xuzhou City, Jiangsu Province Patentee before: Li Qiannan |
|
| TR01 | Transfer of patent right |