CN202708556U - Abrasion resistant welded steel tube - Google Patents
Abrasion resistant welded steel tube Download PDFInfo
- Publication number
- CN202708556U CN202708556U CN 201220299098 CN201220299098U CN202708556U CN 202708556 U CN202708556 U CN 202708556U CN 201220299098 CN201220299098 CN 201220299098 CN 201220299098 U CN201220299098 U CN 201220299098U CN 202708556 U CN202708556 U CN 202708556U
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- China
- Prior art keywords
- welded steel
- steel tube
- abrasion resistant
- utility
- model
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an abrasion resistant welded steel tube which is manufactured according to a cold-drawing process. The abrasion resistant welded steel tube comprises a tube body, the outer wall of the tube body is provided with a compact passivation outer membrane layer formed through cold extruding at the normal temperature or below the recrystallization temperature. The abrasion resistant welded steel tube is simple in the process, low in cost, good in abrasion resistance, high in surface strength, high in strength of extension, and wide in application ranges.
Description
Technical field
The utility model relates to the metallic material technical field, especially a kind of wear-resisting welded steel pipe.
Background technique
Welded steel pipe is not only economical and practical, and cost uses at the alternative seamless steel pipe of a lot of occasions well below seamless steel pipe.But common welded steel pipe in the market is because tensile strength and surface strength are not high enough, and wear resistance is relatively poor, in order to improve the wear resistance of steel pipe, tends to the steel pipe skin is carried out coating film treatment as required.The welded steel pipe of manufacturing out like this, technique comparatively complexity and cost are higher.
The model utility content
The technical problems to be solved in the utility model is: overcomes the deficiency in the prior art, provides a kind of technique simple, and with low cost and wear resistance good, wear-resisting welded steel pipe applied widely.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of wear-resisting welded steel pipe, and adopt cold-drawing technology to be made, comprise body, tube wall has the passivation theca externa in the densification of normal temperature or the following cold hobbing formation of recrystallization temperature.
The beneficial effects of the utility model are: the wear-resisting welded steel pipe technique that the utility model provides is simple, with low cost, and wear resistance is good, and surface strength is high, and tensile strength is high, applied widely.
Description of drawings
Below in conjunction with drawings and embodiments the utility model is further specified.
Fig. 1 is cross section structure schematic representation of the present utility model.
1. bodys, 2. passivation theca externas among the figure
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
A kind of welded steel pipe as shown in Figure 1 adopts cold-drawing technology to be made, and comprises that the cross section is circular body 1, and body 1 outer wall has the passivation theca externa 2 in the densification of normal temperature or the following cold hobbing formation of recrystallization temperature.
Steel pipe body 1 is being gone out behind the burr of inner and outer welding, carries out cold-pressing deformation processing at normal temperature or below the recrystallization temperature.Body 1 outer wall is subject to outer extruding force effect, outer wall surface part crystal grain is along being elongated by force direction, and it is high to have formed surface strength, the passivation theca externa 2 of the densification that wear resistance is good, the tensile strength of welded steel pipe is also improved accordingly simultaneously, and welded steel pipe Applicable scope enlarges.
Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with technique can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (1)
1. a wear-resisting welded steel pipe adopts cold-drawing technology to be made, and comprises body (1), it is characterized in that: described body (1) outer wall has the passivation theca externa (2) in the densification of normal temperature or the following cold hobbing formation of recrystallization temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299098 CN202708556U (en) | 2012-06-25 | 2012-06-25 | Abrasion resistant welded steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299098 CN202708556U (en) | 2012-06-25 | 2012-06-25 | Abrasion resistant welded steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708556U true CN202708556U (en) | 2013-01-30 |
Family
ID=47588861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220299098 Expired - Fee Related CN202708556U (en) | 2012-06-25 | 2012-06-25 | Abrasion resistant welded steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708556U (en) |
-
2012
- 2012-06-25 CN CN 201220299098 patent/CN202708556U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU DIOUMU TUBE INDUSTRY CO., LTD. Free format text: FORMER OWNER: JIANGSU ZHONGYOU PRECISION TUBE MANUFATURING CO., LTD. Effective date: 20150610 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150610 Address after: 213000, Jiangsu Wujin District, Changzhou Province remote town, Qin new industrial concentration area Patentee after: Jiangsu Di Guan Pipe Industry Co., Ltd. Address before: 213011 new industrial park, remote view Town, Wujin District, Jiangsu, Changzhou Patentee before: Jiangsu Zhongyou Precision Tubulation Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20170625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |