GB/T 29037-2012 Thermal spraying protective coatings against high temperature corrosion and oxidation GB/T29037-2012 Standard compression package decompression password: www.bzxz.net
This standard applies to metal thermal spray coatings used as corrosion protection at temperatures below 1000℃ (1273K). Thermal spraying aluminum or zinc coatings that protect steel from atmospheric corrosion refer to GB/T9793. This standard does not include non-metallic material coatings prepared by spraying process.
class="f14" style="padding-top:10px; padding-left:12px; padding-bottom:10px;"> This standard was drafted in accordance with the rules given in GB/T1.1-2009.
This standard adopts the translation method equivalent to ISO17834:2003 "Thermal spraying protective coatings against high temperature corrosion and oxidation".
For Chinese documents that have a consistent correspondence with the international documents normatively referenced in this standard, see Appendix NA.
This standard has made the following editorial changes:
———The foreword of the international standard has been cancelled, and the foreword of the Chinese national standard has been added;
———Informative Appendix NA has been added, which contains Chinese documents that have a consistent correspondence with the international documents normatively referenced in this standard.
This standard was proposed by the China Machinery Industry Federation. This standard
is under the jurisdiction of the National Technical Committee for Standardization of Metallic and Non-metallic Coverings (SAC/TC57).
The drafting units of this standard are: Wuhan Institute of Materials Protection, Jiangxi Hengda High-tech Co., Ltd., and Beijing Hanbo Welding Materials Co., Ltd.
The main drafters of this standard are: Wu Jianhua, Li Jianmin, Jiang Jianmin, Li Kun, Chen Huiguo, and Wang Hongsheng.
The following documents are essential for the application of this standard. For any dated referenced document, only the dated version applies to this standard. For any undated referenced document, the latest version (including all amendments) applies to this standard.
ISO2063 Thermal spraying of zinc, aluminum and their alloys with metallic and other inorganic coatings (Thermals praying—Metallic and other inorganic coatings—Zinc, aluminum and their alloys)
ISO14232 Thermal spraying powder composition and supply technical conditions (Thermals praying—Powders—Composition—Technical supply conditions)
ISO14919 Thermal spraying flame and arc spraying wire, rod and core material classification supply technical conditions (Thermals praying—Wires, rods and cords for flame ​​and arc spraying—Classification—Technical supply conditions)
EN13507 Thermal spraying Surface pretreatment of thermally sprayed metal parts (Thermals praying—Pre-treament of surfaces of metallic parts and components for thermal spraying)
Foreword I
1 Scope1
2 Normative references1
3 Coating materials and processes1
4 Application of coating2
5 Required characteristics2
5.1 Coating thickness2
5.2 Operating temperature, environment and post-treatment2
6 Reprocessing of defective areas3
Appendix A (Informative) Design recommendations for metal sprayed workpieces4
Appendix B (Informative) Coating materials5
Appendix NA (Informative) Chinese documents that have a consistent correspondence with the international documents referenced in this standard6

ICS 25. 220. 20
National Standard of the People's Republic of China
GB/T29037—2012/IS017834:2003 Thermal spraying-Coatings for protection against corrosion and oxidation at elevated temperatures(ISO 17834:2003.IDI)
2012-12-31 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2013-10-01 Implementation
GB/T29037—2012/IS017834:2003 Before
2 Normative references
3 Coating materials and processes
4 Application of coatings
5 Required properties|| tt||5.1 Coating thickness
5.2 Working temperature, environment and post-treatment
6 Retreatment of defective areas
Appendix A (Informative Appendix) Design recommendations for metal sprayed workpieces Appendix B (Normative Appendix) Coating materials
Appendix NA (Informative Appendix)
Chinese documents that have a consistent correspondence with the international documents normatively referenced in this standard.
This standard is drafted in accordance with the rules given in GB/T1.1.-2009 GB/T 29037—2012/ES0 17834:2003 This standard is recommended to use the translation method and is equivalent to IS017834:2003 "Thermal spraying protective coatings against high temperature corrosion and oxidation". Chinese documents that have a consistent correspondence with the international documents normatively referenced in this standard are shown in Appendix NA. This standard has been edited as follows:
一 The prefix of the international standard has been cancelled, and the Chinese national standard has been added. Foreword: 一 The informative appendix NA has been added, which contains Chinese documents that have a consistent correspondence relationship with the international documents normatively referenced in this standard. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Metallic and Non-metallic Coverings (SAC/TC 57). The drafting units of this standard are: Wuhan Institute of Material Protection, Jiangxi Hengren High-tech Co., Ltd., and Beijing Hanbo Welding Materials Co., Ltd.
The main drafters of this standard are: Wu Jianhua, Li Jianmin, Jianmin, Li Kun, Chen Huiguo, and Wang Hongsheng. 1 Scope
GB/T 29037-2012/IS0 17834:2003 Thermal spraying protective coatings against high temperature corrosion and oxidation This standard applies to metallic thermal spraying coatings used as corrosion protection at temperatures below 1 000 °C (1 273 K). Thermal sprayed lead or zinc coatings to protect steel from atmospheric corrosion refer to GB/T9793. This standard does not include non-metallic coatings prepared by spraying process. 2 Normative references
The following documents are indispensable for the application of this standard. For all dated references, only the dated version applies to this standard. For all undated references, the latest version (including all amendments) applies to this standard. ISO2063 Thermal spraying of metallic and other inorganic coatings--Zinc,aluminurl and their alloys ISO14232 Thermal spraying powder composition and supply technical conditions ISO14919 Thermal spraying wires, ruds and cords for flame and arc spraying Classification Technical supply conditions EN13507 Thermal spraying-Pre-treamentolsur-faces of metallic parts and components lor thermal spraying 3 Coating materials and processes
When selecting coating materials and processes, different working temperatures and working environments should be taken into account. For example, in any temperature range, the coating may be subjected to the following effects: oxidation:
other chemical attacks;
oxidation and other chemical attacks in combination. Typical coating materials include:
- nickel-chromium alloy;
iron-chromium-aluminum alloy;
- M-chromium-aluminum-yttrium alloy.
Note: M can be nickel, cobalt, iron or their alloys. These alloys can be mixed with other inert wear-resistant materials such as chromium carbide to obtain comprehensive performance. When selecting coating materials, the following components and their individual or combined effects should be considered: rat,
GB/T2S037-2012/ISO17834:2003 - sodium.
For each of the above, the following points should be considered: a) Oxygen can significantly change the corrosion characteristics. Aluminum can be used alone in a purely oxidizing environment. b) In an environment with a high sulfur content (mass fraction>0.5%), an iron-based alloy or a nickel-based alloy with a chromium mass fraction ≥30% should be used. c) In environments with high oxygen content (mass fraction>0.5%), nickel-based alloys or iron-based alloys with a chromium mass fraction>30% should be used. d) In environments with molten salts such as sodium vanadate or potassium vanadate, iron-based materials with a chromium mass fraction>25% and an aluminum mass fraction>0.5% should be used. e) The coating thickness for aluminum is usually 0.2mm. The thickness for other materials is 0.4mml. The oxidation resistance of chromium bearing alloys is inversely proportional to the amount of chromium lost to oxide formation during spraying and the porosity. Therefore, when choosing a spraying process, spraying processes with lower oxides and porosity are more effective. However, this should be based on the application and economy of the coating. 4 Application of the coating
The coating should be sprayed on a clean and dry surface that has been pretreated according to EN13507. Deep spraying should be carried out as soon as possible after surface preparation and before visible deterioration of the surface. If visible deterioration has occurred compared with the just-pretreated surface of a similar material, the surface should be re-prepared. Unless agreed between the manufacturer and the ordering party and special measures have been taken to ensure a suitably controlled storage atmosphere, the period between surface preparation and spraying shall not exceed 4 h. NOTE A thin layer of metallic coating may be sprayed to preserve the pre-treated surface, see clause 6. The surface of the sprayed coating shall be a uniform structure free of agglomerates, rough areas and loosely bound particles. Contamination or corrosion of the sprayed coating shall be avoided at any stage of the coating application and the coating shall be kept dry and clean until it is subsequently treated in accordance with the requirements of clause 5.
5 Required characteristics
5.1 Coating thickness
Table 1 gives the appropriate nominal coating thickness according to the type of coating. When determined by the method specified in ISO 2063, the minimum local thickness of the coating shall not be less than 75% of the nominal coating thickness and the maximum local thickness shall not be more than 0.1 mm greater than the nominal coating thickness. The coating thickness shall be measured after each metallic coating has been sprayed and before the application of the post-treatment process. 5.2 Working temperature, environment and post-treatment
Table 1 gives the requirements for working temperature, environment and post-treatment process. 1 Requirements and treatment methods for coatings classified by working conditions Types of coatings Working temperature and environment
350--550C, oxidation
350~900℃, oxidation
Up to 1000℃
(without sulfur gas or chlorine or molten salt)
Up to 100℃
[with sulfur gas but without fluorine)
Up to 1 ℃
(Sulfur-containing gas and oxygen)
Spray coating
Coating material (see Appendix B) Rated coating thickness/mm1,2
Post-treatment
Intermediate/final treatment
Can be sealed with silicone sealant
Can be sealed with chain sealant
Working temperature and environment
Harsh corrosive environment
Table 1 (continued)
GB/T29037—2012/IS0 17834:2003 Spray coating
Coating material (see Appendix B) Rated coating thickness/mm6
Post-treatment
Intermediate/final treatment
Can be treated with heat diffusion in an inert atmosphere
If the coating is operated at a temperature higher than that listed in the table, its service life will be affected. The degree of service life will depend on the duration at this high temperature.
In a purely oxidizing environment with a temperature below 350°C, the choice of coating material is not critical. 6 Retreatment of defective areas
Any defective area found before post-treatment should be re-sprayed immediately. Before re-spraying, it should be sandblasted to remove all sprayed metal coatings. If the coating is only too thin, and the surface remains dry and has no visible contamination, the same material can be directly sprayed. GB/T29037-2012/ISO17834:2003 Appendix A
(Metallic Annex)
Design recommendations for metal sprayed parts
Metal sprayed components and structures should be designed with thermal spraying in mind at the beginning. Unreasonable design will not only increase the difficulty and cost of application, but also reduce the entire working life. The following three important guidelines should be followed: a) The design should ensure that all surfaces are accessible during surface preparation and allow for complete and uniform application of the spray coating; b) The design of the structure should make it most difficult for corrosion and oxidation to occur and spread from any weak point. This requires a simple design and easy removal of deposited or retained foreign matter; c) The design should make parts and structures easy to inspect, clean and maintain. Layer material code (Table 1)
"M" can be cobalt, iron or their alloys. Appendix B bZxz.net
(Normative Appendix)
Coating materials
Coating materials
Material type
Flame sprayed rock
Arc sprayed aluminum
Gold-based alloy containing 15% chromium
Iron-based alloy containing 25% chromium
Alloy-based alloy containing 30% chromium
M-chromium aluminum yttrium alloy
GB/T 29037--2012/IS0 17834:2003 Standard
ISO 14919
Iso 14919
ISO14919, ISO 14232
I5O14919，1SO14232
ISO 14919,1S0 14232
ISO 14232
GB/T29037--2012/1S017834:2003 Appendix NA
(Informative Appendix)
Chinese documents that have a consistent correspondence with the international documents referenced in this standard Metals and other inorganic coatings Thermal spraying of zinc, aluminum and their alloys (ISO2063:2005, DT)) GB/T9793—2011
GB/T 12608 --2003
Technical conditions for the supply of wires, rods and core materials for flame and arc spraying
(ISO149192001,MOD)
GB/T 19356—2003
Technical conditions for the composition and supply of thermal spray powders (ISO14232:2000.M0D)6
GB/T 29037-2012
Print date: May 30, 2013 FO09A People's Republic of China
National standard promotion
Thermal spraying protective coatings against high temperature corrosion and oxidation GB/T 29037—2012/ISO 17834:2003*
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Book number: 155066·1-47167, price: 16.00 yuan, if there is any printing error, the publishing center of our company will replace it, copyright infringement will be investigated
Report phone: (010) 6851010775 words, 8 characters, first edition in May 2013, first printing in May 2013*
Book number: 155066·1-47167, price: 16.00 yuan, if there is any printing error, the publishing center of our company will replace it, copyright infringement will be investigated
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