Effect of Temperature Variation of Static Thermal Tensioning on Angular Distortion and Sensitization behavior of GMAW Welded SUS 304 Stainless Steel Plate

Due to its rust resistance properties, the use of stainless steels, especially SUS304 for industrial equipment is increasing. The manufacturing process that is often used is GMAW welding. One of the disadvantages of SUS304 is the occurrence of distortion and sensitization when welded. In this study, the effect of temperature variations of Static Thermal Tensioning on angle distortion and microstructure behavior due to GMAW welding of SUS 304 T-joint plates was studied. Heating by electric heater is given to both parts of the base metal plate SUS 304 5mm thick with temperature variations of 200 oC, 250 oC and 300 oC. Cooling water with a temperature of 24 oC is provided on the back side of the welded track. Welding using filler ER 304 with a diameter of 0.8 mm with welding parameters such as welding current, voltage, gas flow and travel speed controlled at 75 A, 22 V, 10 l/min and 8 mm/s, respectively. Angular distortion of welding results for each treatment temperature variation was measured using a bevel protractor, and perform metallographic test to knowing the microstructural behavior. The results of the measurement of the average angular distortion of three repetitions show that at a temperature of 250 C static thermal tensioning produces the smallest angular distortion of 3ᵒ70', compared to other temperature variations which produce angular distortion 4o45’ at 200 oC and 3o86' at temperature 300 oC. The findings of the largest Cr (carbide) deposits due to sensitization were found at a temperature of 300 oC at 16,49% and the lowest at a temperature of 200 oC at 7,05%

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Effect of Temperature Variation on Cyclic Elastic-Plastic Behavior of SUS 304 Stainless Steel

Journal of Pressure Vessel Technology ◽

10.1115/1.2928601 ◽

1990 ◽

Vol 112 (2) ◽

pp. 152-157 ◽

Cited By ~ 6

Author(s):

Y. Niitsu ◽

K. Ikegami

Keyword(s):

Stainless Steel ◽

Temperature Variation ◽

Cyclic Hardening ◽

Experimental Results ◽

304 Stainless Steel ◽

Effect Of Temperature ◽

Plastic Behavior ◽

Elastic Plastic ◽

Temperature Conditions ◽

Hardening Models

The cyclic elastic-plastic behavior of SUS 304 stainless steel was investigated experimentally under various temperatures and temperature-changing conditions. The specimens were cyclically loaded between fixed axial strain limits at constant temperatures in the range from room temperature to 600°C. The effects of the cyclic strain amplitude on the saturation property of cyclic hardening were obtained at various temperatures. The effects of temperature variations on the cyclic hardening were examined under the temperature conditions of changing between two different temperatures. From these experimental results, the effects of the temperature variation on the saturation properties were found under several temperature conditions. The three different hardening models accounting for these cyclic hardening properties were proposed. The experimental results were compared with the results calculated by those three cyclic hardening models.

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EFFECT OF TEMPERATURE VARIATION ON PLASTIC BEHAVIOR OF SUS 304 STAINLESS STEEL

Bulletin of JSME ◽

10.1299/jsme1958.28.2853 ◽

1985 ◽

Vol 28 (246) ◽

pp. 2853-2858 ◽

Cited By ~ 6

Author(s):

YASUSHI NIITSU ◽

KOZO IKEGAMI

Keyword(s):

Stainless Steel ◽

Temperature Variation ◽

304 Stainless Steel ◽

Effect Of Temperature ◽

Plastic Behavior

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Control of Distortion in Thin Ship Panels

Journal of Ship Production ◽

10.5957/jsp.1997.13.2.83 ◽

1997 ◽

Vol 13 (02) ◽

pp. 83-92

Author(s):

Chris Conrardy ◽

Randy Dull

Keyword(s):

Plate Thickness ◽

Cost Effective ◽

Dominant Mode ◽

Angular Distortion ◽

Back Side ◽

New Techniques ◽

Ship Construction ◽

Thick Steel ◽

Manufacturing Techniques ◽

Thermal Tensioning

The increased use of thin section (i.e., less than 10-mm (3/8-in.) thick) steel in ship panel construction has aggravated distortion problems, adding to the costs for fitting and flame straightening. This paper describes the results of a study to evaluate techniques for control of distortion in thin panels used in ship construction. The objective of this project is to identify cost effective techniques for controlling distortion. Buckling is usually the dominant mode of distortion in thin panels, followed by angular distortion. Means of reducing both forms of distortion are discussed. During the design phase relatively small adjustments to the design, such as changing plate thickness or stiffener spacing, can significantly reduce distortion. Improving manufacturing techniques, including reducing weld size, implementing intermittent welding, and restraining the panel during welding, can also make a major impact on reducing distortion. New techniques such as egg-crate construction, laser welding, thermal tensioning, back-side line heating, back-bending, and weld quenching also show promise.

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Damage Localization of an Offshore Platform considering Temperature Variations

Mathematical Problems in Engineering ◽

10.1155/2015/954926 ◽

2015 ◽

Vol 2015 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Shuqing Wang ◽

Min Zhang ◽

Huajun Li

Keyword(s):

Temperature Variation ◽

Numerical Study ◽

Offshore Platform ◽

Structural Safety ◽

Effect Of Temperature ◽

Modal Parameters ◽

Damage Localization ◽

Offshore Structure ◽

Modal Strain Energy ◽

Temperature Variations

Modal parameters are sensitive indicators of structural damages. However, these modal parameters are sensitive not only to damage, but also to the environmental variations. Development of vibration based damage detection methodology which is robust to environmental variation is essentially important for the structural safety. The present paper utilizes a recently developed modal strain energy decomposition (MSED) method to localize the damage of an offshore structure. A progress of the present paper is to take the temperature variation into consideration and Monte Carlo simulation is introduced to investigate the effect of temperature variation on the robustness of damage localization. Numerical study is conducted on an offshore platform structure considering the temperature variation. Several damage cases, including single and double damage scenarios, are included to investigate the damage localization algorithm. Results indicate that the MSED algorithm is able to detect the damage despite the temperature variations.

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