Hardfacing chromium carbide overlay pipe/tubing/elbow with extreme
wear/abrasion resistanceHART Hardfacing Overlay Pipe is
manufactured by depositing chromium-rich, abrasion-resistant
materials on the mild steel pipe, using a traditional arc welding
process. The Pipe is available with double or multiple overlay
passes. And it can be fabricated as square-to-round transitions,
elbows, T or Y- shaped.The hardfacing overlay pipe is designed with
extreme wear capabilities for working in many applications: mining,
cement, oil sands, dredging, recycling and steel production
industries.[Technical Specification Of HART-PP-100 ] 1.Outer
Diameter: 80-2000mm 2. Hardfacing Layer: Chromium carbon
alloy on Fe basis(austenite) Bulk hardness: >630HV Mean
hardness: >55HRC Layer thickness: 3 to 30 mm 3. Welding
Processes: Advanced welding with internally or externally
clad chromium carbide overlay. 4. Alloy Description:
Austenitic chrome carbide iron(Chromium white iron) 5. Carbide
Hardness: >1750HV 6. Volume Fraction of Carbide:
>30% 7. Chemical Composition: Carbon: 3-6% Chromium:
18-34% *Various alloys to be used depend on different operating
condition and applications. ThickC%Cr%Mn%Si%HRC 3
on 33~418~200.5~10.5~156~58 3 on
43~418~200.5~10.5~156~58 3 on
53~418~220.5~10.5~158~60 3 on
N3.5~4.520~250.5~10.5~158~62N>54 on
N3.5~4.520~250.5~10.5~158~625 on N4~623~250.5~10.5~158~626 on
N4~624~280.5~10.5~158~627 on N4.5~624~280.5~10.5~158~628 on
N4.5~624~280.5~1.50.5~158~629 on N5~626~300.5~1.50.5~160~6410 on
N5~626~300.5~1.50.5~160~6411 on N5~626~300.5~1.50.5~160~6412 on
N5~626~340.5~1.50.5~160~64N on N5~626~340.5~20.5~160~64N>128.
Microstructure: Composed of a high proportion of
extremely hard primary M7C3 chromium rich carbides dispersed in
a ductile eutectic austenite matrix. Maintains 30% to 50%
of primary carbides to provide a good wear resistance and
homogenous bonding. 9. Typical Applications: HART-PP-100
Pipe is widely used in the mining, power generation(Coal),
cement, dredging, steel production, waste handling, glass
production, and pulp and paper industries. Some specific
applications include: INDUSTRYAPPLICATONSMiningSlurry pumps,
chutesCementSlurry pumps, chutesDredgingDredging pipes and pumps,
suction pipelines, pump dischargesSteelSuction pipelines, pump
discharges, air ducts, carbon injection pipes, suction lines,
troughsRecyclingCullet glass10. Wear properties of HART-PP-100
(ASTM G65 and SGS test report) *ASTM G65 is a standard test
measuring sliding abrasion resistance using a dry sand/rubber
wheel apparatus. HARDBANDING ALLOYASTM G65 -- WEIGHT
LOSSHARDNESS (RC)10+10-80.162 g/6000 revs64.710+10-40.183 g/6000
revs63.710+10-20.149 g/6000 revs64.011. Service
SERVICEDESCRIPTIONCutting1. Can be cut by plasma, laser, water jet,
arc gouge, and abrasive saw cutting; 2. Cannot be cut by
oxy-fuel. Welding1. Use 480 MPa (70 ksi) or 560 MPa (80 ksi)
consumable to join base metal; 2. After welding, joint should
be capped by overlay for wear protection. Machining1. Not
machinable by conventional methods; 2. Can be finished by
grinding only; 3. Countersunk holes can be precisely produced
by EDM (Electrical Discharge Machining). Forming1. Commonly
formed with overlay to the inside; 2. For pipes with diameters
smaller than 0.6m (24"), hardfacing pipe recommended instead of
pipes fabricated from hardfacing plate. Drilling1. When
drilling, the distance between two holes should be at least 15mm
(5/8''); Otherwise, the partition may not be strong enough and can
crack; 2. The minimum diameter of holes should be equal to the
thickness of the plates. For thicker plates with a total
thickness over 20mm (3/4''), the minimum diameter should be 1.5
times the thickness of the plate. 12. Testing and quality
controlWe documented how the product properties are tested in order
to make sure the overlay plates fulfil the specified product
properties. Including documentation on 3D party's quality system if
calibration and testing is performed by 3D party. 13. Packing
and loading /* January 22, 2024 19:08:37
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