CN106834952B - Oil cylinder bobbin and preparation method thereof - Google Patents
Oil cylinder bobbin and preparation method thereof Download PDFInfo
- Publication number
- CN106834952B CN106834952B CN201710018185.2A CN201710018185A CN106834952B CN 106834952 B CN106834952 B CN 106834952B CN 201710018185 A CN201710018185 A CN 201710018185A CN 106834952 B CN106834952 B CN 106834952B
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- hot
- rolled tube
- tube billet
- oil cylinder
- finished product
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Abstract
The invention discloses a kind of oil cylinder bobbin and preparation method thereof, the weight percent of component and each component that oil cylinder bobbin contains is as follows: C:0.15%~0.22%；Si:0.10%~0.50%；Mn:1.20%~1.70%；P:0~0.015%；S:0.02%~0.08%；Nb:0~0.04%；V:0~0.14%；N:0~0.03%；Al:0.01%~0.04%, remaining is iron and inevitable impurity, amounts to 100%.It has compared with high-strength tenacity, and is easy to machining.
Description
Technical field
The present invention relates to a kind of oil cylinder bobbins and preparation method thereof.
Background technique
Currently, oil cylinder is increasing year by year with the demand in tubing market with the extensive use of hydraulic machinery.Existing market
Upper oil cylinder cylinder barrel material mainly has 20 steel, 35 steel, 45 steel, Q345B, 25Mn, and state is that rolled or normalizing state, intensity are lower.
With development oil cylinder industry self weight lightness and recommend heavy-duty, intensity and low-temperature impact toughness to oil cylinder are required increasingly
Height, yield strength is greater than 500MPa and -20 DEG C of impact values are greater than 27J and have become trend,
Currently, the processing of domestic Barrel of Hydraulic Cylinders inner hole, main boring (rolling) technique using hot rolled seamless steel tube with
The honing technique of solid drawn tube.The cylinder barrel of external some hydraulic cylinder manufacturers, mostly uses greatly cold drawn tube technique and one kind
Novel processing technology-scraping tumbling processing technology.Oil cylinder pipe be broadly divided into from structure ram cylinder, ram cylinder,
Multi-stage oil cylinder, swing-type cylinder.The inner surface rough overshoot requirement of plunger-type cylinder cylinder barrel is low, and heavy boring can obtain finished product cylinder barrel,
Generally in order to avoid cold-drawing technology, cylinder tube mainly is processed by increasing boring processing capacity on hot-rolled pipe in reality, this
During class oil cylinder heavy boring, often occur " crushing knife " phenomenon occur since a Lathe quantity is big, the cost of charp tool sharply increases, special
It is not that some heavy calibers of processing, Hi-grade steel or the non-uniform cylinder barrel of hardness, situation are even more so.
Currently, the material of domestic pairing polishes cylinder cylinder barrel and entire technological process of production research are few, to improvement alloy
The report of cylinder barrel cutting ability is even more rare.Although have in disclosed patent to oil cylinder pipe in the recent period it is mentioned, for example, application number
The Introduction To Cn Patent of the CN201310646150.5 processing method of cold-drawn oil cylinder pipe, technical process: take the lead, drill,
Pickling, phosphatization, saponification, cold-drawn.Suitable for the oil cylinder pipe cold-drawn of wall thickness is greatly reduced；Application No. is CN201220556451.X
Chinese patent disclose the oil cylinder pipe that a kind of tube body is manganese steel straight seam welded pipe, this oil cylinder pipe is easy to process, cost is relatively low；Shen
Number a kind of turning process of steering cylinder cylinder barrel, key step please be disclosed for a Chinese patent of CN201410411168.1
Are as follows: blanking, turning, welding support, milling face, drilling, interior hole machined.Semi-finished product.Using deep hole boring machine by interior hole and honing
Merge, improves inner hole finish, and improve efficiency, simplify production procedure.For another example, application No. is
The Introduction To Cn Patent of the CN201310500770.8 manufacturing method of cold drawing accurate oil cylinder bobbin is related to hot-rolled pipe, cold
The production technologies such as tube drawing, honing.The above patent has a following features, first, the above patent be all especially cold from processing technology
Pull out inner surface quality, the size and shape precision for improving cylinder tube on technique and turning process；The second, do not refer to that turning adds
The consumption of cutter when being especially the big cutting output situation of ram cylinder inner surface in work.
In short, the research of China's cylinder tube is concentrated mainly on cold-drawn processing, turning process, it is actually rare from material
Consider to improve the comprehensive performance of cylinder barrel in design and the design of cylinder barrel tube end, improve plunger type or multi-stage oil cylinder cylinder barrel machinability
Can, it is improved so that the production cost of this kind of high-performance oil cylinder bobbin be made to reduce with production efficiency.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of oil cylinder bobbin is provided, it has
Have compared with high-strength tenacity, and is easy to machining.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of oil cylinder bobbin, component that it contains and
The weight percent of each component is as follows:
C:0.15%~0.22%；Si:0.10%~0.50%；Mn:1.20%~1.70%；P:0~0.015%；S:
0.02%~0.08%；Nb:0~0.04%；V:0~0.14%；N:0~0.03%；Al:0.01%~0.04%, remaining is
Iron and inevitable impurity amount to 100%.
Further for the metal cutting amount to oil cylinder bobbin reasonable distribution different zones, improves cylinder barrel material and utilize
Rate reduces metal cutting amount, the present invention also provides a kind of preparation method of oil cylinder bobbin, the step of method in contain:
(a) it is matched according to the weight percent of each component and each component, prepares hot-rolled tube billet；
(b) one end of hot-rolled tube billet is heated, and an external upset (EU) is carried out to the end；To the other end of hot-rolled tube billet
Portion's heating, and the other end thicken in primary, form semi-finished product；Wherein, the external upset (EU) is from the one of hot-rolled tube billet
Outward radial thickeies at the outer wall of end, and interior thicken is radially to add from the inner wall of the other end of hot-rolled tube billet
It is thick.
Further, also contain in the step of method: (c) is machined semi-finished product as requested, forms finished product.
Further, in the step (c), machining includes to the outside wall surface turnery processing of semi-finished product and/or right
The inner wall boring of semi-finished product is processed.
The end of hot-rolled tube billet is thickeied further for convenient, in the step (b), to hot-rolled tube billet
The heating of one end and/or the other end uses segmentally heating, and the method for segmentally heating is first to preheat 850 DEG C~950 DEG C, finally
Heating temperature is 1100 DEG C~1200 DEG C.
Further for heating uniformity is guaranteed, in the step (b), in heating process, hot-rolled tube billet at the uniform velocity revolves
Turn, rotation speed is 1~25r/min.
It further, is first to preheat 900 DEG C to the method for the segmentally heating for the end for carrying out external upset (EU) on hot-rolled tube billet, finally
Heating temperature is 1120 DEG C.
It further, is first to preheat 900 DEG C to the method for the segmentally heating for carrying out internally upset end on hot-rolled tube billet, finally
Heating temperature is 1100 DEG C.
The oil cylinder bobbin obtained using above method has characteristics that yield strength ReH >=500MPa, tensile strength
Rm >=650MPa, elongation percentage >=20%, the cost of charp tool save 15%~20% lower than 0.02% steel grade than sulfur content.
The beneficial effects of the present invention are: 1) develop with compared with high-strength tenacity and being easy to the oil cylinder of machining with containing
Sulphur cylinder barrel；2) in order to improve the lumber recovery of oil cylinder processing factory and reduce cutter consumption, while metal material utilization rate is improved, sufficiently
Cylinder structure is researched and analysed, due to serving as sealing function and guide function, amount of machining is bigger at oil cylinder both ends, other positions
Glossy surface only need to be processed, this both ends process for upsetting can be used at cylinder barrel both ends in this main processing capacity of explanation
The machining amount for coming reasonable distribution both ends and intermediate position, with reference to automatic steel principle, mass fraction, which is added, is
0.02%~0.08% element sulphur is conducive to machining to improve its cutting ability, reduces cutter consumption, improves life
Produce efficiency；Especially in high-intensitive cylinder barrel cutting process, be less prone to due to hardness height and cutting output are big and crushing knife causes work
Part is scrapped, and end-thickened structure makes reasonable economy on cylinder structure, is optimized cylinder barrel end inside/outside diameter size precision, is saved gold
Belong to material, while substantially reducing the machining amount of cylinder barrel pipe, reduces cutter consumption.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the semi-finished product of oil cylinder bobbin of the invention；
Fig. 2 is the structural schematic diagram of the finished product of oil cylinder bobbin of the invention.
Specific embodiment
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.
Embodiment one
The weight percent of a kind of oil cylinder bobbin, component and each component that it contains is as follows:
C:0.21%；Si:0.3%；Mn:1.70%；P:0.013%；S:0.045%；V:0.11%；Al:0.02%,
Yu Weitie and inevitable impurity amount to 100%.
Contain in the step of preparation method of oil cylinder bobbin:
(a) it is matched according to the weight percent of each component and each component, prepares hot-rolled tube billet；The specification Φ of hot-rolled tube billet
158mm × 10.5mm, length 1650mm examine straight degree≤1.0mm/m, and (S is average for same section for eccentricity≤10%S
Wall thickness)；
(b) one end of hot-rolled tube billet is heated, and an external upset (EU) is carried out to the end；To the other end of hot-rolled tube billet
Portion's heating, and the other end thicken in primary, form semi-finished product；Wherein, the external upset (EU) is from the one of hot-rolled tube billet
Outward radial thickeies at the outer wall of end, and interior thicken is radially to add from the inner wall of the other end of hot-rolled tube billet
It is thick；Wherein, external upset (EU) is carried out using external upset (EU) mold and external upset (EU) formed punch, using in interior thickening mould and the progress of interior thickening formed punch
It thickeies, the internal diameter of external upset (EU) mold is Φ 162.7mm, and external upset (EU) formed punch outer diameter Φ 137.6mm, the end specification of external upset (EU) is Φ
162mm × 12.5mm (outer diameter × wall thickness)；Internal diameter Φ 158.7mm, the interior thickening formed punch outer diameter Φ 133.6mm of interior thickening mould,
Internally upset end specification Φ 158mm × 12.5mm；End surface after thickening is tested: surfaces externally and internally is intact at thickening
It owes, the gross imperfections such as crackle, the semi-finished product of thickening are as shown in Figure 1.
Also contain in the step of method: (c) is machined semi-finished product as requested, forms finished product, finished product such as Fig. 2
It is shown.
In the step (c), machining includes to the outside wall surface turnery processing of semi-finished product and/or to semi-finished product
Inner wall boring processing.
The end of hot-rolled tube billet is thickeied for convenience, in the step (b), to the one end of hot-rolled tube billet
And/or the heating of the other end uses segmentally heating, the method for segmentally heating is first to preheat 850 DEG C~950 DEG C, final heating temperature
Degree is 1100 DEG C~1200 DEG C.
In order to guarantee heating uniformity, in the step (b), in heating process, hot-rolled tube billet at the uniform velocity rotates, rotation
Speed is 1~25r/min.
Method to the segmentally heating for the end for carrying out external upset (EU) on hot-rolled tube billet is first to preheat 900 DEG C, final heating temperature
Degree is 1120 DEG C.
Method to the segmentally heating for carrying out internally upset end on hot-rolled tube billet is first to preheat 900 DEG C, final heating temperature
Degree is 1100 DEG C.
Embodiment two
The weight percent of a kind of oil cylinder bobbin, component and each component that it contains is as follows:
C:0.16%；Si:0.10%；Mn:1.20%；S:0.02%；V:0.14%；N:0.02%；Al:0.04%,
Yu Weitie and inevitable impurity amount to 100%.
It is identical in the preparation method and embodiment one of the oil cylinder bobbin of the present embodiment, unlike:
Method to the segmentally heating for the end for carrying out external upset (EU) on hot-rolled tube billet is first to preheat 850 DEG C, final heating temperature
Degree is 1100 DEG C.
Method to the segmentally heating for carrying out internally upset end on hot-rolled tube billet is first to preheat 950 DEG C, final heating temperature
Degree is 1200 DEG C.
Embodiment three
The weight percent of a kind of oil cylinder bobbin, component and each component that it contains is as follows:
C:0.22%；Si:0.50%；Mn:1.50%；P:0.015%；S:0.08%；Nb:0.04%；V:0.08%；N:
0.03%；Al:0.02%, remaining is iron and inevitable impurity, amounts to 100%.
It is identical in the preparation method and embodiment one of the oil cylinder bobbin of the present embodiment, unlike:
Method to the segmentally heating for the end for carrying out external upset (EU) on hot-rolled tube billet is first to preheat 950 DEG C, final heating temperature
Degree is 1200 DEG C.
Method to the segmentally heating for carrying out internally upset end on hot-rolled tube billet is first to preheat 850 DEG C, final heating temperature
Degree is 1150 DEG C.
For the product that three embodiments obtain through detecting, mechanical property is as shown in table 1, outside cylinder barrel blank when interior boring, cylinder barrel
End shape structural integrity, tool wear is small, and " swaging clamp " phenomenon does not occur, and the cost of charp tool saves 15%~20%.Crackle etc. lacks
It falls into.Reach technical standard requirement.
Table 1: cylinder tube blank mechanical property
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this
Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection scope.
Claims (3)
1. a kind of preparation method of oil cylinder bobbin, which is characterized in that the weight of component and each component that oil cylinder bobbin contains
Percentage is as follows: P:0 ~ 0.015%；Nb:0 ~ 0.04%；C:0.16%；Si:0.10%；Mn:1.20%；S:0.02%；V:
0.14%；N:0.02%；Al:0.04%, remaining is iron and inevitable impurity, amounts to 100%；
Contain in the step of method:
(a) it is matched according to the weight percent of each component and each component, prepares hot-rolled tube billet；
(b) one end of hot-rolled tube billet is heated, and an external upset (EU) is carried out to the end；The other end of hot-rolled tube billet is added
Heat, and the other end thicken in primary, form semi-finished product；Wherein, the external upset (EU) is the one end from hot-rolled tube billet
Outer wall at outward radial thicken, it is described interior to thicken radially to be thickeied from the inner wall of the other end of hot-rolled tube billet；It is right
The one end of hot-rolled tube billet and the heating of the other end use segmentally heating, and the method for segmentally heating is first to preheat 850 DEG C ~ 950
DEG C, final heating temperature is 1100 DEG C ~ 1200 DEG C；In heating process, hot-rolled tube billet at the uniform velocity rotates, and rotation speed is 1 ~ 25r/
min；
(c) semi-finished product are machined as requested, form finished product；Machining includes the outer wall facing to semi-finished product
It processes and the inner wall boring of semi-finished product is processed.
2. preparation method according to claim 1, it is characterised in that: point to the end for carrying out external upset (EU) on hot-rolled tube billet
The method of Duan Jiare is first to preheat 900 DEG C, and final heating temperature is 1120 DEG C.
3. preparation method according to claim 1, it is characterised in that: divide internally upset end is carried out on hot-rolled tube billet
The method of Duan Jiare is first to preheat 900 DEG C, and final heating temperature is 1100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018185.2A CN106834952B (en) | 2017-01-10 | 2017-01-10 | Oil cylinder bobbin and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018185.2A CN106834952B (en) | 2017-01-10 | 2017-01-10 | Oil cylinder bobbin and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106834952A CN106834952A (en) | 2017-06-13 |
| CN106834952B true CN106834952B (en) | 2019-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018185.2A Active CN106834952B (en) | 2017-01-10 | 2017-01-10 | Oil cylinder bobbin and preparation method thereof |
Country Status (1)
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| CN (1) | CN106834952B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289998A (en) * | 2021-12-17 | 2022-04-08 | 绍兴力欣液压件有限公司 | Preparation process of high-strength oil cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4117170B2 (en) * | 2002-09-13 | 2008-07-16 | 株式会社神戸製鋼所 | Carburizing steel and carburized parts |
| WO2012060383A1 (en) * | 2010-11-02 | 2012-05-10 | 新日本製鐵株式会社 | Method of cutting steel for use in machine structures |
| DE102014102452A1 (en) * | 2014-02-25 | 2015-08-27 | Vallourec Deutschland Gmbh | Process for the production of hot rolled, seamless tubes of transformable steel, in particular for pipelines for deep water applications and related pipes |
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