Welding Of Hardox - Australian Steel

2y ago
10 Views
2 Downloads
951.16 KB
20 Pages
Last View : 1m ago
Last Download : 5m ago
Upload by : Cade Thielen
Transcription

Welding of Hardox

Welding of HardoxThe unique performance of Hardox wear plate is combined withexceptional weldability. Any conventional welding methods canbe used for welding these steels to any type of weldable steel.This brochure aims to simplify, improve and boost the efficiencyof welding processes. It offers advice on i.e. preheat and interpasstemperatures, heat input, welding consumable, etc. It enables everyuser to gain full benefit of the unique properties of Hardox.CONTENTSImportant parameters affecting the welding result6Welding consumables6Requirements on hydrogen content of welding consumables7Stainless steel welding consumables8Shielding gas9Heat input10Cooling time t8/511Welding sequence and root opening size12Preheat and interpass temperatures12Hydrogen cracking13Preheat and interpass temperatures for Hardox13Interpass temperature15Attaining and measure the preheat temperature15Hard facing16Recommendations in order to minimize distortion17Welding on Hardox primer18Post weld heat treatment18

HardoxHardox is the brand name for wear resistant steels from SSAB. Hardox wear plates are widelyused in every climate, terrain and environment. Users all over the world put their trust inHardox when fighting wear. Hardox boosts performance and maximizes the uptime of applications like excavators, front wheel loaders, tipper bodies, mining trucks, conveyors, chutes,containers, crushers, fragmentizers, mixers, sieves, demolition tools, and barges. For workshops, it shortens lead times and cuts production costs.Table 1. Mechanical properties HardoxMechanical PropertiesSteel gradeHardness[HBW]Min - maxYieldstrength1(MPa)ElongationA5 1(%)ImpacttoughnessCVL1t 20 mmThickness(mm)Hardox HiTuf310 - 3708501495J -40 ºC40 - 160Hardox 400370 - 43010001045J -40 ºCHardox 450425 - 475130032Hardox 450425 - 4751100 - 130010Hardox 500450 - 5401250Hardox 550Hardox 600Hardox Extreme3 - 1300.7 – 2.1050J -40 ºC3 – 13035J -40 ºC4 - 80525 - 57530J -40 ºC10 - 50570 - 64020J -40 ºC8 - 5157 - 63 15J -40 ºC8 - 2031. Typical values2. A803. HRCTable 2. Chemical CompositionChemical Composition (ladle analysis)Steel gradeCMax %SiMax %MnMax %PMax %SMax %Hardox HiTuf0.20Hardox 40010.150.601.600.0200.0200.701.600.0250.010Hardox 45020.180.251.300.0150.004Hardox 4500.260.701.600.0250.010Hardox 5000.300.701.600.0200.010Hardox 5500.370.501.300.0200.010Hardox 6000.470.701.000.0150.010Hardox Extreme0.470.501.00.0150.0201. Max. for 20 mm plate thickness2. 0.7 – 2.10 mm plate thickness4CrMax %NiMax %MoMax %BMax 041.202.500.700.0051.202.500.800.005

Important parameters affecting thewelding resultClean the weld area to remove moisture, oil, corrosion or any impurities prior to welding. Inaddition to good welding hygiene, the following aspects are important:4 Choice of welding consumables4 Preheat and interpass temperatures4 Heat input4 Weld sequence and size of root gap in the jointWelding consumablesStrength of unalloyed and low-alloyed welding consumablesUnallaoyen and low alloyed consumables with maximum yield strength of 500 MPa is generally recommended for Hardox. Consumables of higher strength (Re max. 900 MPa) maybe used for Hardox 400 and 450 in the thickness range 0.7 – 6.0 mm. Low alloyed consumables result in higher hardness of the weld metal and thus reduced wear rate of the weldmetal. If the wear properties of the weld metal are essential, the top cap of the joint could bewelded with consumables used for hardfacing, see chapter “hard facing”. In addition, recommended consumables for Hardox steels and their designations according to AWS and

TIG AWS A5.18 ER70X AWS A5.28 ER80X EN ISO 636-A- W 42xx EN ISO 636-A- W 46xx Note: X stands for one or more characters 6. 7 Table 4: Recommended stainless steel consumables for Hardox steels Welding method AWS classification

Related Documents:

The extreme performance of Weldox high strength steel and Hardox wear plate is combined with exceptional weldability. Any conventional welding method can be used for welding these steels to any type of weldable steel. This brochure is aimed at simplifying, improving and boostin

6.3 Mechanised/automatic welding 114 6.4 TIG spot and plug welding 115 7 MIG welding 116 7.1 Introduction 116 7.2 Process principles 116 7.3 Welding consumables 130 7.4 Welding procedures and techniques 135 7.5 Mechanised and robotic welding 141 7.6 Mechanised electro-gas welding 143 7.7 MIG spot welding 144 8 Other welding processes 147 8.1 .

Mild steel (mini) - 0.6mm 8132100 Use for gas welding Mild steel (mini) - 0.8mm 8132070 Use for gas welding Stainless Steel 0.8mm (mini spool) 8132090 Welding Gas CO 2 (250g) 6000642 For welding mild steel CO 2 (600g) 6000643 For welding mild steel CO 2/Argon Mix 6000660 For welding stainless/ thin sheet mil

seam butt welding resistance butt welding flash butt welding resistance butt welding shielded unshielded other process plasma laser resistance butt welding inert gas welding submerged arc welding atomic hydrogen shielded metal arc welding (coated electrode) esepl w w w . e u r e k a e l e c t r o d e s .

the welding processes most often used in today's industry including plasma arc cutting, oxyfuel gas cutting and welding, Gas Metal Arc Welding (GMAW), Flux-Cored Arc Welding (FCAW), Shielded Metal Arc Welding (SMAW), and Gas Tungsten Arc Welding (GTAW). Flat welding positions and basic joints will be practiced. Pipe and tube welding

3. Classification of Underwater Welding Underwater welding may be divided into two main types: a) Wet welding b) Dry welding Fig. 3.1 Classification of underwater welding 3.1 Wet welding 3.1.1. Wet welding with coated electrode Wet welding is performed at ambient pressure with the welder-diver in the water and no physical barrier

Hardox and Weldox are easily cut by the plasma cutting process. Plasma cutting has a limitation when it comes to material thickness and the main thickness to be cut is below 50 mm (plasma cutting machine dependent). Ge-nerally features for plasma cutting can be seen in table 4. Tabel 4. General features for plasma cutting. Figure 7 shows .

The Curriculum and Instruction Department . Mukilteo School District . Independent Daily Reading Goal: To practice reading at your independent reading level. Directions: 1. Read a book at your independent reading level. 2. Have a family member ask you 2-3 questions and discuss the story with them. 2nd Grade Fiction Questions What did you picture as you read this story? What words or phrases .