CN107620013B - Air conditioner cooling water pipe and preparation process thereof - Google Patents
Air conditioner cooling water pipe and preparation process thereof Download PDFInfo
- Publication number
- CN107620013B CN107620013B CN201710788248.2A CN201710788248A CN107620013B CN 107620013 B CN107620013 B CN 107620013B CN 201710788248 A CN201710788248 A CN 201710788248A CN 107620013 B CN107620013 B CN 107620013B
- Authority
- CN
- China
- Prior art keywords
- cooling water
- water pipe
- alloy steel
- pipe
- 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.)
- Active
Links
- 239000000498 cooling water Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims abstract description 3
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 27
- 238000005496 tempering Methods 0.000 claims description 16
- 238000000137 annealing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000004381 surface treatment Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 20
- 239000010959 steel Substances 0.000 abstract description 20
- 229910052790 beryllium Inorganic materials 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 14
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000012629 purifying agent Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses an air conditioner cooling water pipe and a preparation process thereof, and belongs to the technical field of metal materials. The oil filling pipe comprises the following raw materials in percentage by weight: be: 0.3-2.5%, Zr: 0.2-0.8%, C: 0.4-0.6%, Si: 0.5-1.0%, Cr: 0.6-1.2%, Ni: 4-5%, and the balance of Fe and impurities. Be and Zr in the raw materials not only can greatly reduce the content of the impurity element P, S, O, N in the product, but also can enable the steel to have higher temperature strength, creep property and low-temperature toughness. The product is refined by a medium frequency induction furnace, grain refinement is carried out by combining deformation and phase change, and the uniform and compact In-Sn coating is formed on the surface of the product by adopting a chemical vapor deposition method after machining and welding forming.
Description
Technical Field
The invention relates to an air conditioner cooling water pipe and a preparation process thereof, belonging to the field of metal materials.
Background
Since the second half of the 19 th century, with the ever increasing production and use of steel, the machine manufacturing industry needs to solve the problem of machining and cutting of steel, and the self-hardening steel containing 2.5-7% W was invented by the english man, and thus alloy steels containing different metal elements began to develop extremely rapidly.
Alloy steel is an alloy system which is based on iron and carbon, is added with a certain amount of elements such as copper, nickel, molybdenum, chromium, manganese and the like, and is formed by controlling the content of carbon. Alloy steel has high strength, high hardness and certain ductility, is particularly suitable for being used as a structural material, is widely applied to the national defense industry and the civil industry, and plays an important role in the industries of automobiles, motorcycles, firearms and household appliances.
The traditional air-conditioning cooling water pipe is generally processed by pressure, so that processed steel (blank, ingot and the like) is subjected to plastic deformation, and then two types of cold processing and hot processing are performed according to different processing temperatures of the steel. The main processing method of the steel comprises the following steps: rolling, casting, drawing, extruding, etc. The traditional processing method has various working procedures and also has defects in product performances such as strength, hardness and the like.
In view of the disadvantages of low hardness and poor wear resistance of conventional alloy steels, publication 106244936a discloses a method for improving strength, hardness and wear resistance of products by increasing the contents of carbon, chromium and molybdenum in alloy balls. However, simply increasing the contents of certain elements in the alloy does not solve the problems of crushing strength, toughness, corrosion resistance and reduction of impurity elements in the steel.
Disclosure of Invention
In view of the problems, the invention provides an air conditioner cooling water pipe with high strength, high toughness, corrosion resistance and low impurity elements.
In order to achieve the purpose, the invention adopts the following technical scheme:
the air-conditioning cooling water pipe comprises a pipe body and an In-Sn coating coated on the surface of the pipe body, wherein the pipe body is made of alloy steel, and the alloy steel comprises the following components In percentage by mass: be: 0.3-2.5%, Zr: 0.2-0.8%, C: 0.4-0.6%, Si: 0.5-1.0%, Cr: 0.6-1.2%, Ni: 4-5%, and the balance of Fe and impurities.
In the existing alloy steel raw material proportion, manganese is usually used as a deoxidizer and a desulfurizer, although the manganese has the characteristics of rich resources and various effects, the manganese can increase the coarsening tendency and the temper brittleness sensitivity of steel grains, and the steel is improperly cooled after smelting, pouring and forging, so that white spots are easily generated on the steel. Beryllium is added into the raw materials of the alloy steel, the beryllium, oxygen and sulfur have strong affinity, the capacity of removing oxygen and sulfur is better than that of manganese, and the steel can have higher temperature strength and creep property. Meanwhile, zirconium in the raw materials is a powerful deoxidizing and denitrifying element, is a purifying agent for removing oxygen, nitrogen, sulfur and phosphorus, improves the low-temperature toughness of steel in low-alloy structural steel, and has a far better effect than vanadium in the traditional alloy steel.
Preferably, the In-Sn coating layer coated on the surface of the pipe fitting has a thickness of 0.1-0.2 mm. As a surface protection for the pipe, the thickness of the coating may affect the practical use of the product.
Preferably, in the air-conditioning cooling water pipe component, the content of each impurity is P < 0.05%, S < 0.06%, N < 0.02%, and O < 0.01%. The content of impurities cannot be well reduced by manganese in the traditional raw material proportion, but the impurity element content is far lower than the requirement by adding beryllium and zirconium with stronger affinity, so that the performance of steel is improved.
The invention also provides another technical scheme while reasonably selecting the material proportion:
the preparation process of the air conditioner cooling water pipe comprises the following steps:
(1) preparing materials: weighing the raw materials according to the components and the mass percentage of the alloy steel;
(2) smelting: putting the raw materials into a medium-frequency induction furnace to prepare alloy steel;
(3) grain refinement: tempering the alloy steel, performing rapid temperature deformation, annealing after deformation, and machining to obtain a pipe fitting body;
(4) surface treatment: and coating the In-Sn coating on the surface of the pipe fitting body to obtain the finished product of the air-conditioning cooling water pipe.
Alloy steel with high strength, high toughness and low brittle transition temperature is an ideal structural material. One of the most efficient and direct ways to achieve this combination of properties is to refine the grains. Grain refinement can be accomplished by deformation or phase transformation processes, but both processes alone do not maximize grain refinement and do not provide material compositional uniformity. The invention combines the phase change and the deformation, carries out the tempering and temperature deformation process operation of the quenched steel, and can refine the crystal grains to be less than 1 mu m, so that the formed piece has fine crystal grain structure, uniform component distribution, stable part size and good comprehensive performance.
Meanwhile, In-Sn is coated on the surface of the water pipe by utilizing a vapor deposition method, so that a layer of uniform and compact protective film can be formed, the corrosion resistance of the product can be greatly enhanced, the rust resistance is also improved, the water pipe can be suitable for various environments, and the service life is greatly prolonged.
Preferably, in the step (3), the grain refinement is specifically: smelting in a smelting furnace to obtain quenched alloy steel, rapidly heating the quenched alloy steel to the temperature of 300-700 ℃, tempering for 1-15min, and performing plastic deformation on the alloy steel after tempering to be used as the first step of grain refinement. Then the deformed alloy steel is annealed for 1-30min at the temperature of 400-600 ℃ as a second step for refining grains.
Preferably, in the step (4), the surface treatment is specifically: firstly, a transition layer with the thickness of 0.01-0.05mm is sprayed on the surface of the pipe fitting to form a low-density In-Sn protective film, and then a uniform and compact In-Sn protective film with the thickness of 0.1-0.2mm is formed on the surface of the air-conditioning cooling water pipe by utilizing a chemical vapor deposition method. Considering the effect of expansion with heat and contraction with cold of the product, the sprayed first layer of In-Sn protective film is loose and contains gaps, so that the density of the protective film is reduced, and the stress of expansion with heat and contraction with cold of the product can be resisted. The organic combination of the low-density In-Sn transition layer and the In-Sn coating can effectively prevent the In-Sn coating from peeling off due to different expansion coefficients.
Compared with the prior art, the invention has the following advantages:
(1) beryllium is added into the raw materials, the beryllium, oxygen and sulfur have strong affinity, the capacity of removing oxygen and sulfur is better than that of manganese, and simultaneously, the steel has higher temperature strength and creep property.
(2) Zirconium in the raw material is a powerful deoxidizing and denitrifying element, is a purifying agent for removing oxygen, nitrogen, sulfur and phosphorus, improves the low-temperature toughness of steel in low-alloy structural steel, and has far better effect than vanadium in traditional alloy steel.
(3) The preparation method adopts a quenching steel tempering temperature deformation process, obtains supersaturated ferrite through martensite phase transformation, homogenizes the material components and improves the internal energy.
(4) The rapid tempering process generates strong plastic deformation, so that not only crystal grains are refined, but also dynamic recrystallization and strain-induced carbide precipitation are generated in the deformation process, the plasticity of the material is improved, and meanwhile, the product has high strength, high toughness and low brittleness due to the grain refinement.
(5) The annealing temperature and time are controlled to realize the optimization of the material structure, so that the formed piece has the advantages of fine grain structure, uniform component distribution, stable part size and good comprehensive performance.
(6) By utilizing an In-Sn chemical vapor deposition coating method, a uniform and compact protective film is formed on the surface of the water pipe, so that the corrosion resistance and the rust resistance of the product are enhanced.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
Preparing materials: weighing the raw materials according to the components and the mass percentage of the alloy steel, wherein the raw materials comprise Be: 1.5%, Zr: 0.5%, C: 0.5%, Si: 0.8%, Cr: 0.8%, Ni: 4.5 percent of Fe and impurities in balance, wherein the impurities comprise less than 0.05 percent of P, less than 0.06 percent of S, less than 0.02 percent of N and less than 0.01 percent of O.
Smelting: and adjusting the output power of the intermediate frequency smelting furnace according to the material mixing property, and putting the material mixing into the smelting furnace to prepare the alloy steel.
Grain refinement: smelting in a smelting furnace to obtain quenched alloy steel, rapidly heating the quenched alloy steel to 600 ℃, and tempering for 5min to realize first-step grain refinement by means of temperature deformation. And then annealing the deformed alloy steel at 500 ℃ for 8min to realize the second step of grain refinement. And finally, processing and welding by a JCO forming machine to obtain the pipe fitting body.
Surface treatment: firstly coating a layer of low-density In-Sn on the surface of the pipe fitting body, and then coating the In-Sn coating by using a chemical vapor deposition method to obtain a pipe fitting finished product. The combination of high and low coating density can effectively prevent the In-Sn coating from peeling off due to different expansion coefficients.
Examples 2 to 5
The only difference from example 1 is that the amount of Be in the formulations of examples 2-5 was 0.3%, 1%, 2%, 2.5%, respectively.
Examples 6 to 7
The only difference from example 1 is that the Zr contents in the batches of examples 6-7 were 0.2% and 0.8%, respectively.
Example 8
The difference from example 1 is only that in the grain refinement of example 8, the tempering temperature is 300 ℃, the tempering time is 1min, the annealing temperature is 300 ℃, and the annealing time is 1 min.
Example 9
The difference from example 1 is only that in the grain refinement of example 9, the tempering temperature is 500 ℃, the tempering time is 10min, the annealing temperature is 400 ℃, and the annealing time is 10 min.
Example 10
The difference from example 1 is only that in the grain refinement of example 10, the tempering temperature is 800 ℃, the tempering time is 15min, the annealing temperature is 600 ℃, and the annealing time is 30 min.
Example 11
The only difference from example 1 is that only one In-Sn coating layer is coated In the surface treatment of example 11.
Comparative example 1
The only difference from example 1 is that the formulation of comparative example 1 does not contain Be.
Comparative example 2
The only difference from example 1 is that the batch of comparative example 2 contains no Zr.
Comparative example 3
The difference from example 1 is only that comparative example 3 grain refinement is only tempered.
Comparative example 4
The only difference from example 1 is that comparative example 4 grain refinement was only annealed.
Comparative example 5
The only difference from example 1 is that comparative example 5 does not perform grain refinement.
Comparative example 6
The only difference from example 1 is that comparative example 6 was not coated with an In — Sn coating.
The air-conditioning cooling water pipes of examples 1 to 11 and comparative examples 1 to 6 were tested for their crushing strength, yield strength, corrosion resistance and impurity content, and the results are shown in table 1:
table 1: properties of the products of examples 1 to 11 and comparative examples 1 to 6
The data in the table show that the grain refinement has a crucial influence on the crushing strength and the yield strength of the product, and the invention combines the phase change and the deformation to enhance the product performance to the maximum extent. The Be and Zr elements added in the ingredients have strong effect on removing impurity elements in the alloy steel.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.
Claims (2)
1. The air-conditioning cooling water pipe is characterized by comprising a pipe body and an In-Sn coating coated on the surface of the pipe body, wherein the pipe body is made of alloy steel, and the alloy steel comprises the following components In percentage by mass: be: 1.5%, Zr: 0.5%, C: 0.5%, Si: 0.8%, Cr: 0.8%, Ni: 4.5 percent, and the balance of Fe and impurities;
the preparation method of the air conditioner cooling water pipe comprises the following steps:
(1) preparing materials: weighing the raw materials according to the components and the mass percentage of the alloy steel;
(2) smelting: putting the raw materials into a medium-frequency induction furnace to prepare alloy steel;
(3) grain refinement: tempering the alloy steel, performing rapid temperature deformation, annealing after deformation, and finally machining and welding to obtain a pipe fitting body;
(4) surface treatment: coating an In-Sn coating on the surface of the pipe fitting body to obtain a finished product of the air-conditioning cooling water pipe;
the tempering temperature in the grain refinement is 300-800 ℃, and the tempering time is 1-15 min;
the annealing treatment temperature in the grain refinement is 300-600 ℃, and the annealing time is 1-30 min;
the surface treatment specifically comprises the following steps: firstly, a transition layer with the thickness of 0.01-0.05mm is sprayed on the surface of the pipe fitting to form a low-density In-Sn protective film, and then a uniform and compact In-Sn protective film with the thickness of 0.1-0.2mm is formed on the surface of the air-conditioning cooling water pipe by utilizing a chemical vapor deposition method.
2. The air conditioner cooling water pipe of claim 1, wherein the impurities comprise P < 0.05%, S < 0.06%, N < 0.02%, and O < 0.01%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788248.2A CN107620013B (en) | 2017-09-05 | 2017-09-05 | Air conditioner cooling water pipe and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788248.2A CN107620013B (en) | 2017-09-05 | 2017-09-05 | Air conditioner cooling water pipe and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107620013A CN107620013A (en) | 2018-01-23 |
| CN107620013B true CN107620013B (en) | 2021-11-30 |
Family
ID=61088519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710788248.2A Active CN107620013B (en) | 2017-09-05 | 2017-09-05 | Air conditioner cooling water pipe and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107620013B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041454A (en) * | 2009-10-21 | 2011-05-04 | 宝山钢铁股份有限公司 | High hardness steel for forging and forming cold roller |
| CN104004972A (en) * | 2014-05-19 | 2014-08-27 | 安徽金大仪器有限公司 | Low-temperature-resistant and corrosion-resistant deep-sea-use high-strength valve and manufacturing method thereof |
| CN105384467A (en) * | 2015-12-14 | 2016-03-09 | 中国航空工业集团公司北京航空制造工程研究所 | Environmental barrier coating used for ceramic base composite material matrix, and making method thereof |
| CN106244936A (en) * | 2016-08-30 | 2016-12-21 | 马鞍山市中马金属材料有限公司 | Alloy steel ball |
| CN106566988A (en) * | 2016-10-18 | 2017-04-19 | 滁州市大工机电有限公司 | Alloy steel material for anti-corrosion pump valve and preparation method thereof |
-
2017
- 2017-09-05 CN CN201710788248.2A patent/CN107620013B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041454A (en) * | 2009-10-21 | 2011-05-04 | 宝山钢铁股份有限公司 | High hardness steel for forging and forming cold roller |
| CN104004972A (en) * | 2014-05-19 | 2014-08-27 | 安徽金大仪器有限公司 | Low-temperature-resistant and corrosion-resistant deep-sea-use high-strength valve and manufacturing method thereof |
| CN105384467A (en) * | 2015-12-14 | 2016-03-09 | 中国航空工业集团公司北京航空制造工程研究所 | Environmental barrier coating used for ceramic base composite material matrix, and making method thereof |
| CN106244936A (en) * | 2016-08-30 | 2016-12-21 | 马鞍山市中马金属材料有限公司 | Alloy steel ball |
| CN106566988A (en) * | 2016-10-18 | 2017-04-19 | 滁州市大工机电有限公司 | Alloy steel material for anti-corrosion pump valve and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107620013A (en) | 2018-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2009355404B2 (en) | High-toughness abrasion-resistant steel and manufacturing method therefor | |
| EP4414473A1 (en) | High-strength steel with good weather resistance and manufacturing method therefor | |
| CN104451421B (en) | High-strength high-toughness bimetallic strip saw blade back steel and preparation method thereof | |
| CN103334052A (en) | High-thermal conductivity high-abrasion resistance hot stamping die steel and preparation method thereof | |
| JP5226083B2 (en) | High alloy cold die steel | |
| CN109694983B (en) | High-mirror-surface corrosion-resistant plastic die steel and manufacturing method thereof | |
| CN113403536A (en) | Hot stamping formed steel with super-strong high-temperature oxidation resistance and preparation method thereof | |
| CN111088448B (en) | Cobalt-based high-temperature alloy strip foil and preparation method thereof | |
| JP7530127B2 (en) | Mold steel and its manufacturing method | |
| CN105220073B (en) | Hot-rolled strip steel for rake blades, production method and rake blade treatment method | |
| CN105132814B (en) | Strip steel for rake blades, production method and heat treatment method for rake blades | |
| CN104480400B (en) | A kind of C-N-B composite hardening high wear-resisting cold process mould steel | |
| CN107620013B (en) | Air conditioner cooling water pipe and preparation process thereof | |
| CN110791706A (en) | Austenitic coarse-grain structural steel for cold forging and preparation method of wire rod of austenitic coarse-grain structural steel | |
| CN111647797B (en) | High-speed tool steel and steel heat treatment method thereof | |
| JP2014210941A (en) | Powder high-speed tool steel excellent in high-temperature temper hardness | |
| CN115044826A (en) | 410 ferritic stainless steel | |
| CN113637894A (en) | Leveling-free and tempering-free HB 450-grade wear-resistant steel and production method thereof | |
| JP3724142B2 (en) | Method for producing coarse grain-resistant case-hardened steel | |
| JPWO2012043228A1 (en) | High hardness pre-hardened cold tool steel for surface PVD treatment, method for producing the same, and surface PVD treatment method therefor | |
| CN106811683A (en) | A kind of Al Nb V composite alloyings critical point mould steel high | |
| CN112813361A (en) | Steel for hardware tools and preparation method thereof | |
| CN106435129B (en) | Ferritic stainless steel with good toughness and corrosion resistance and manufacturing method thereof | |
| CN106609336A (en) | Acid-resistant stainless steel and production method thereof | |
| CN108396247A (en) | Low-cost high-toughness cold-work die steel plate and production method thereof |
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 |