Welding Flux for Peb Steel Structure, Welding Materials Hj250

• state: Solid
• pH: Acidic
• Type: Inorganic
• Melting Point: >600℃
• Chemical Composition: Welding Flux Hj260
• Function: Protect Weld Metal
• Model NO.: hj250
• Application: Submerged-arc Welding
• Manufacturing Method: Smelting
• Quality System: ISO9001:2008
• Transport Package: Kraft Bag with Plastic Lining Inside
• Specification: 25kg/bag, 40bags/plywood pallet
• Trademark: PANDING
• Origin: Laiwu, Shandong, China
• HS Code: 38109000
• Production Capacity: 10000 Tons Agglomerated Flux, 8000 Tons Fused Flux

Product Description

Panding Brand  Fused Flux LH-HJ251

Specifications:
GB/T17854-1999 F308-H0Cr21Ni10; F347-H0Cr20Ni10Nb

Description:
      HJ251 is a kind of smelting-type low-Mn mid-Si and mid-F flux,It appears light-yellow to light-green jade-like particles with the mesh of 10-60(2-0.3mm).During the course of welding,direct-current main is adopted and welding wires or bands are connected to the positive electrode.It has good welding performance.
Usage:
      It can be used in the welding of pearlite heat-resisting steel in conjunction with HO8Cr2MoA welding wire containing Cr and Mo.It is also used in the welding of rotors in steam turbines and so on.
Cautions:

1.Ipmurities on the welding surface must be removed before welding,such as oil soil,mositure,iron rust etc.
2.The flux must be baked for 2 hours under the temperature of 250-300ºC before it is used.

Applications:
Combination with stainless steel welding wires (H0Cr21Nil10, H0Cr21INi10Nb, H1Cr13, H3Crl3 etc.), this fused flux is designed for welding the acid-resistance stainless steel structure and is also suitable for hard-facing of roller.
Chemical Composition(%)

SiO2	Al2O3+TiO2	MnO+Fe	CaO+MgO	CaF2	S	P
28-38	19-25	3-8	20-25	20-25	≤0.040	≤0.040

 
The chemical composition of deposited metal

WIRE	C	Mn	Si	S	P	Cr	Ni	Nb
H308	≤0.08	0.50-2.50	≤1.0	≤0.03	≤0.04	18.0-21.0	9.0-11.0	_
H347	≤0.08	0.50-2.50	≤1.0	≤0.03	≤0.04	18.0-21.0	_	8×C-1.0

 
Mechanical Performance of the Deposited Metal

WIRE	Tensile strength	Elongation
	Rm/MPa	A(%)
F308-H0Cr21Ni10	≥520	≥30
F347-H0Cr21Ni10Nb	≥520	≥25

 
The instruction of usage:
Redried the flux at 350ºCfor 2 hours before use;
Remove the rust,oil and dirt from the surface of welding groove.
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