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With the exploration and innovation of Bebon people, DEN gradually formed four major advantageous products: steel plate, steel pipe, stainless steel, special steel, and established our own Machining processing center in order to meet customer's diverse requirements.




Experimental study of hot cracking at circular welding

In this research, a welding test to simulate the circular welding on quenched and tempered 42CrMo steel is performed to compare and investigate the possibility of hot cracking formation at the weld joints in three welding processeslaser welding, leading laser laser MAG hybrid welding, and leading arc laser MAG hybrid welding.

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4140 HIGH TENSILE STEEL

Welding Procedure Welding of 4140 in whatever condition should always be carried out using low hydrogen electrodes please consult your welding consumables supplier. Suggested pre heat temperature Section 25mm 40mm 50mm 75mm 150mm + oC 370 400 425 455 510 Post Welding Maximum cooling rate 95 oC per hour down to 95 C, follow by cooling in still air. N.B. No draught.It is

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#TITLE# |KOBELCO KOBE STEEL, LTD. KOBELCO WELDING

When welding such a high strength steel material, there are two ways of thinking in selecting the welding consumables. One is to place importance on the strength of the weld metal and adopt such a welding consumable that produces the weld metal whose strength is similar to that of the base metal.

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34CrNiMo6 1.6582 4337 Engineering Steel Otai Special

8.Welding. The alloy materials can be fusion or resistance welded. Preheat and post heat weld procedures should be followed when welding this alloy by established methods. 9.Application. EN DIN 34CrNiMo6 steel is used to make tools which demands good plasticity and high strength.

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42CrMo4 / 1.7225 SteelNumber Chemical composition

Chemical composition of steel 42CrMo4 (1.7225), Standards of steel 42CrMo4 (1.7225) Mechanical Properties of steel 42CrMo4 (1.7225) Equivalent grades of steel 42CrMo4 (1.7225) steel 42CrMo4 (1.7225) Tensile Strength, Elongation, Proof strength , Hardness

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EN19 Steel 4140 1.7225 SCM440 42CrMo4 OTAI

OTAI SPECIAL STEEL is ASTM EN19 steel stockholders and suppliers from china. we have more 16 years experience in EN19 alloy steel supply. EN19 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched &

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Base Metal Grouping for Welding Procedure and

Base Metal Grouping for Welding Procedure and Performance Qualification 1. Scope This publication is an extract of AWS B2.1/B2.1M:2014 , Specification for Welding Procedure and Performance Qualifi cation, and is identical to Annex C, Base Metal Grouping, in the 2014 edition of that standard. This publication super

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WeldNote Welding Management Software

Jun 06, 2016 · How to write a welding procedure specification (ISO 15614 1) One of the most important documents in regards to welding is the WPS (Welding Procedure Specification) and many people working with WPS look at them like they are just an issue, or something that only the engineers and quality control technicians have to worry about, but is it a hard thing to create and/or look at?

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An Explanation of Certified Pipe Welding

method (Welding Procedure Specification) and prove that sound welds can be made through the use of these procedures. Contractor/Membership. Contractors who are members of the National Certified Welding Bureau can guarantee that the welding is per formed in

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42CRMO4 (+QT) MEKA Steel

cast material, the procedure described in S&P, D33 General, section "Steelmaker Metallurgical Approval" shall be followed. The casting method shall be stated. 2.4 Inclusions The maximum length for a single inclusion shall not exceed 3 mm. Heat check according to ISO 4967:1998 (E), Method A. The micro inclusion rating can be made on the

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Welding Procedure Specifications (WPSs) National

BackgroundThe new NCPWB Welding Procedure Specification numbering system clearly defines the type of metals to be welded, the welding process used and allows for identification of variations in a process. This numbering system will be used on all Welding Procedure Specifications revised or developed in the future. The following describes the new numbering system:Welding Procedure

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Effect of Post Weld Heat Treatment Process on

In this study, N80 42CrMo4 dissimilar drill pipes were welded by a roto friction welding machine. A set of welded samples were tested as welded condition. Another set of welded samples were post weld heat treated (stress relief annealing) at the temperature of 600 °C, for 20 min. and then tested.

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Welding Procedure Guide MTEC a member of NSTDA

Sample welding procedure specifications are available on our website cwbgroup 4.0 Welding Procedure Data Sheet (WPDS) A welding procedure data sheet (WPDS) is a document, used in conjunction with a WPS, detailing the welding parameters and ranges for welding a specific joint, over a range of thicknesses and weld sizes, as

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4 Popular Types of Welding Procedures

Dec 04, 2014 · 4 Types of Welding Processes Gas Metal Arc Welding (GMAW/MIG) This style of welding is also referred to as Metal Inert Gas (MIG). It uses a shielding gas along the wire electrode, which heats up the two metals to be joined. This method requires a constant voltage and direct current power source, and is the most common industrial welding process.

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Welding SteelConstructionfo

The welding coordinator prepares a preliminary welding procedure specification (pWPS), which is an initial proposal for carrying out the procedure test. For each joint configuration, either butt or fillet weld, consideration is given to the material grade and thickness and anticipated fit up tolerances likely to be achieved in practice.

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The Welding Handbook Wilh. Wilhelmsen

The purpose of the Welding Handbook for maritime welders is to provide guidance in modern welding and related processes and to provide the welder with a source of practical information on the right solution to specific onboard welding problems. Experience gained from user contact and welding training of crewmembers showed that

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WeldNote Welding Management Software

Jun 06, 2016 · How to write a welding procedure specification (ISO 15614 1) One of the most important documents in regards to welding is the WPS (Welding Procedure Specification) and many people working with WPS look at them like they are just an issue, or something that only the engineers and quality control technicians have to worry about, but is it a hard thing to create and/or look at?

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High Quality BS EN 42CrMo4 1.7225 Alloy Engineering

We insist on offering high quality production with good business concept, honest sales and the best and fast service. it will bring you not only the high quality product and huge profit, but the most significant is to occupy the endless market for High Quality BS EN 42CrMo4 1.7225 Alloy Engineering Steel in Myanmar, We welcome you to inquire us by call or mail and hope to build a successful

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