GB/T 8549-1987 Fe-Cr-B-Si self-fluxing alloy powder GB/T8549-1987 Standard download decompression password: www.bzxz.net

UDC669.018.41-492.2
National Standard of the People's Republic of China
GB8549-87
Fe-Cr-B-Si self-fluxing alloy powder
Metallic powder material-Self-fluxingFe-Cr-B-Si alloy powder
Published on December 30, 1987
Published by the State Bureau of Standards
Implementation on December 1, 1988
National Standard of the People's Republic of China
Fe-Cr-B-Si self-fluxing alloy powder
Metallic powder materialSelf-fluxingFe-Cr-B-Sialloypowder
This standard applies to Fe-Cr-B-Si self-fluxing alloy powder for oxy-acetylene and plasma flame spray welding. 1.1 Self-fluxing alloy refers to an alloy containing boron and silicon elements, with a low melting point, self-deoxidation, and good wettability with the substrate. UDC 669.018.41
GB8549-87
1.2 Oxygen-acetylene flame spray welding refers to a surface strengthening technology that uses an oxygen-acetylene flame as a heat source to spray the self-fluxing alloy powder in a molten or semi-molten state after passing through the flame zone onto the surface of the workpiece, and then remelts it to achieve a fusion welding combination of the coating and the substrate. 1.3 Plasma flame spray welding refers to a surface strengthening technology that uses a plasma flame as a heat source to spray the self-fluxing alloy powder in a molten or semi-molten state after passing through the flame zone onto the surface of the workpiece, and then remelts it to achieve a fusion welding combination of the coating and the substrate. 1.4 Remelting refers to the process of remelting the self-fluxing alloy powder sprayed onto the surface of the workpiece to densify the coating and achieve a fusion welding combination with the substrate.
2 Varieties and specifications
Iron-chromium-boron-silicon self-fluxing alloy powder is divided into 17 grades according to chemical composition and properties, see Table 1. 2.1
Alloy grade
FZFeCr05-25H
FZFeCr05-35H
FZFeCr05-40H
FZFeCr05-50H
FZFeCr07-50H
FZFeCr10-50H
FZFcCr13-20H
FZFeCr15-25H
FZFeCr17-35H
FZFeCr17-45H
FZFeCr17-50H||tt ||FZFeCr19-30H
FZFeCr22-35H
FZFeCr23-30H
FZFeCr30-50H
FZFeCr30-55H
FZFeCr48-60H
Approved by China Nonferrous Metals Industry Corporation on December 21, 1987 Melting temperature, ℃
10001170
1035~1205
1000~1150
1035~1205| |tt||1035~1205
1000~1150
11501220
1035~1205
104 0~1165
980~1100
1110~1270
1200~1300
1137~1218| |tt||11721250
1110~1260
1150~1250
1160~1280
Spray welding layer Hardness, HRC
Spray welding layer characteristics
Excellent
wear resistance and toughness
Excellent
acid resistance, corrosion resistance
and wear resistance
Excellent
heat resistance, oxidation resistance,
corrosion resistance and wear resistance
1988-12-01||tt| |2.2 Example of brand designation method
3 Technical requirements
GB8549-87
Characteristics of alloy powder ("H" indicates alloy powder for spray welding, hardness of spray welding layer ("35\ indicates that the hardness of spray welding layer is HRC35) Separator dash
Average percentage of chromium ("05\ indicates that the chromium content is 4~6%) - Iron-chromium·boron-silicon system
Self-fluxing alloy powder
3.1 The chemical composition of the powder shall comply with the provisions of Table 2. 3.2 The particle size range of the powder shall comply with the following provisions: The powder for oxygen-acetylene flame spray welding is 104~38μm. The powder with a particle size of 104~124um shall not exceed 3%; powder particles larger than a.
124um are not allowed to exist, and the powder with a particle size less than 38um shall not exceed 5%. b. The powder for plasma flame spray welding is 250~74um. The powder with a particle size of 250~295um shall not exceed 2%; powder particles larger than 295um are not allowed to exist; the powder with a particle size smaller than 74μm shall not exceed 5%. 3.3 The powder fluidity shall not exceed 25s/50g. 3.4 The powder bulk density shall not be less than 3.5g/cm2. The melting temperature range of the powder shall comply with the provisions of Table 1. 3.5
The hardness range of the powder spray welding layer shall comply with the provisions of Table 1. 3.6
The powder shall not have foreign inclusions visible to the naked eye. 3.7
4 Test method
The chemical composition analysis method of the powder shall be carried out in accordance with the relevant provisions of GB223.1~223.50 "Chemical Analysis Methods for Steel and Alloys". 4.1
4.2 The detection method of the powder particle size range shall be carried out in accordance with GB148084 "Dry Sieving Method for Determination of Particle Size Composition of Metal Powders". 4.3 The determination method of powder fluidity shall be carried out in accordance with GB1482-84 "Standard Funnel Method for Determination of Metal Powder Fluidity (Hall Rheometer)".
4.4 The detection method of powder bulk density shall be carried out in accordance with GB1479-84 "Metal Powder Bulk Density Determination Sliding Bucket Method"
Part 1
4.5 The determination method of powder melting temperature range shall be carried out in accordance with GB6526-86 "Determination Method of Solid-Liquidus Temperature Range of Self-Fusing Alloy Powder".
4.6 The determination method and sample preparation of powder spray welding layer hardness shall be carried out in accordance with GB864088 "Method for Rockwell Hardness Test of Metal Thermal Spray Coating Surface".
GB8549—87
0-080.9-0
0℃~0
8'1~0'T
01~9*0
8*0~*0
8°0~0
0°6~0°9
9'1~01
08~0°9
n9-0*t
Inspection rules
GB8549-—87
5.1 The product shall be inspected by the supplier's technical supervision department to ensure that the product quality meets the requirements of this standard and fill in the quality certificate. 5.2 The sampling method for random inspection shall be carried out in accordance with GB5314-85 "Sampling method for powder metallurgy powder". 5.3 The purchaser shall promptly inspect the product after receiving it. If the inspection result does not comply with the provisions of this standard, the purchaser shall submit the matter to the supplier within three months from the date of receipt of the product, and the supply and demand parties shall negotiate to resolve the issue. If arbitration is required, the supply and demand parties shall jointly take samples at the purchaser's side. 5.4 Products shall be submitted for inspection in batches, and each batch shall consist of powders of the same brand and specification, with a batch weight not exceeding 400kg. 5.5 If the inspection result does not comply with the provisions of this standard, double sampling of the unqualified items in the batch shall be conducted for re-inspection. If one of the results still does not meet the standard requirements, the batch of products shall be unqualified. 6 Packaging and marking
6.1 The product must be dry before being placed in a hard container. The packaging must be tight to prevent moisture and leakage. 2 The net weight of the product in each container shall not exceed 10kg. 6.2
The packaging container should be marked with the supplier's name and trademark, product name, brand and the word "moisture-proof" or logo. Each batch of powder should be accompanied by a product quality certificate, which should indicate: supplier's name and trademark;
product name;
brand,
batch number:
net weight;
various inspection results and the stamp of the technical supervision department; packaging date;
this standard number.
Additional instructions:
This standard was drafted by the Iron and Steel Research Institute of the Ministry of Metallurgical Industry. The main drafters of this standard are Jiang Zhenchun, Zhu Ruizhen, Liu Chunlan and Li Zhongquan. -
People's Republic of China
National Standard
Fe-Cr-B-Si Self-Fusing Alloy Powder
GB8549-87
Published by China Standards Pressbzxz.net
(Beijing Fuwai Sanlihe)
Printed by Beijing Printing House of China Standards Press Distributed by Beijing Distribution Office of Xinhua Bookstore Sold by Xinhua Bookstores in various places Copyright is exclusive and reproduction is prohibited
Format 880×12301/16 Printing sheet 1/2
Number of words 8000
First edition in June 1988 First printing in June 1988 Number of copies"—2500
Book number: 155066: 1-5610
Standard date 93-21
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