CN102896813A - Composite coating seamless steel tube - Google Patents
Composite coating seamless steel tube Download PDFInfo
- Publication number
- CN102896813A CN102896813A CN 201210360549 CN201210360549A CN102896813A CN 102896813 A CN102896813 A CN 102896813A CN 201210360549 CN201210360549 CN 201210360549 CN 201210360549 A CN201210360549 A CN 201210360549A CN 102896813 A CN102896813 A CN 102896813A
- Authority
- CN
- China
- Prior art keywords
- seamless steel
- steel pipe
- steel tube
- thickness
- coating
- 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.)
- Pending
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 239000011651 chromium Substances 0.000 claims abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011701 zinc Substances 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 11
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a composite coating seamless steel tube. The composite coating seamless steel tube comprises a hollow seamless steel tube body, an inner zinc coating is mounted on the inner wall of the hollow seamless steel tube body, an outer zinc coating is mounted on the outer wall of the hollow seamless steel tube body, a chromium coating is mounted on the outer surface of the outer zinc coating, and the thickness of the chromium coating is larger than that of the outer zinc coating. The composite coating seamless steel tube has the advantages that the sufficient hardness of the surface is achieved, and the composite coating seamless steel tube is simple and practical and can be directly used as various rollers.
Description
Technical field
The present invention relates to the seamless steel pipe technical field, particularly relate to a kind of composite deposite seamless steel pipe.
Background technology
Seamless steel pipe is widely used in fields such as industrial production, urban construction.Seamless steel pipe is a kind of hollow section that has, and periphery does not have jointed circle, square or rectangle steel.Seamless steel pipe is to make hollow billet with steel ingot or the solid pipe hole that wears long, and then makes through hot rolling, cold rolling or cold group.An important function of seamless steel pipe is as various rolls, but the hardness on existing seamless steel pipe surface is often inadequate, all needs reprocessing, and is cumbersome.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of composite deposite seamless steel pipe, can solve problems of the prior art, and the surface has enough hardness, can directly be used as various rolls.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of composite deposite seamless steel pipe is provided, comprise: hollow seamless steel pipe body, the inwall of described hollow seamless steel pipe body is provided with interior zinc coat, the outer wall of described hollow seamless steel pipe body is provided with the external galvanized layer layer, described external galvanized layer layer outer surface is provided with chromium coating, and the thickness of described chromium coating is greater than the thickness of described external galvanized layer layer.
In a preferred embodiment of the present invention, the thickness of described interior zinc coat is 0.03 ~ 0.05mm.
In a preferred embodiment of the present invention, the thickness of described external galvanized layer layer is 0.01 ~ 0.03mm.
In a preferred embodiment of the present invention, the thickness of described chromium coating is 0.04 ~ 0.12mm.
The invention has the beneficial effects as follows: composite deposite seamless steel pipe of the present invention, the surface has enough hardness, can directly be used as various rolls, and is simple and practical.
Description of drawings
Fig. 1 is the structural representation of composite deposite seamless steel pipe one preferred embodiment of the present invention;
The mark of each parts is as follows in the accompanying drawing: 1, hollow seamless steel pipe body, 2, interior zinc coat, 3, the external galvanized layer layer, 4, chromium coating.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
See also Fig. 1, the embodiment of the invention comprises:
A kind of composite deposite seamless steel pipe, comprise: hollow seamless steel pipe body 1, the inwall of described hollow seamless steel pipe body 1 is provided with interior zinc coat 2, the outer wall of described hollow seamless steel pipe body 1 is provided with external galvanized layer layer 3, described external galvanized layer layer 3 outer surface are provided with chromium coating 4, and the thickness of described chromium coating 4 is greater than the thickness of described external galvanized layer layer 3.
The thickness of described interior zinc coat 2 is 0.03 ~ 0.05mm, so that the inwall of seamless steel pipe is not easy to be corroded.
The thickness of described external galvanized layer layer 3 is 0.01 ~ 0.03mm.
The thickness of described chromium coating 4 is 0.04 ~ 0.12mm, has greatly improved the hardness of seamless steel pipe outer surface, so that seamless steel pipe can be used as various rolls.
Composite deposite seamless steel pipe of the present invention, the surface has enough hardness, can directly be used as various rolls, and is simple and practical.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (4)
1. composite deposite seamless steel pipe, it is characterized in that, comprise: hollow seamless steel pipe body, the inwall of described hollow seamless steel pipe body is provided with interior zinc coat, the outer wall of described hollow seamless steel pipe body is provided with the external galvanized layer layer, described external galvanized layer layer outer surface is provided with chromium coating, and the thickness of described chromium coating is greater than the thickness of described external galvanized layer layer.
2. composite deposite seamless steel pipe according to claim 1 is characterized in that, the thickness of described interior zinc coat is 0.03 ~ 0.05mm.
3. composite deposite seamless steel pipe according to claim 1 is characterized in that, the thickness of described external galvanized layer layer is 0.01 ~ 0.03mm.
4. composite deposite seamless steel pipe according to claim 1 is characterized in that, the thickness of described chromium coating is 0.04 ~ 0.12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210360549 CN102896813A (en) | 2012-09-26 | 2012-09-26 | Composite coating seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210360549 CN102896813A (en) | 2012-09-26 | 2012-09-26 | Composite coating seamless steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102896813A true CN102896813A (en) | 2013-01-30 |
Family
ID=47569443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210360549 Pending CN102896813A (en) | 2012-09-26 | 2012-09-26 | Composite coating seamless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102896813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9486984B2 (en) | 2014-05-05 | 2016-11-08 | National Taiwan University | Steel sheet and fabrication method thereof |
-
2012
- 2012-09-26 CN CN 201210360549 patent/CN102896813A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9486984B2 (en) | 2014-05-05 | 2016-11-08 | National Taiwan University | Steel sheet and fabrication method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |