Removal of furnace scale from the surface of rolled plate by means of a steam and gas blasting method

Metallurgist ◽  
1958 ◽  
Vol 2 (6) ◽  
pp. 314-315
Author(s):  
M. A. Lapis ◽  
E. F. Koshevaia
Keyword(s):  
Rolled Plate ◽  
Blasting Method ◽  
Furnace Scale

Removal of furnace scale from the surface of rolled plate by means of a steam and gas blasting method

Metallurgist ◽  
1958 ◽  
Vol 2 (6) ◽  
pp. 312-314
Author(s):  
M. I. Bazhenov-Korchemnyi ◽  
L. I. Danilov
Keyword(s):  
Rolled Plate ◽  
Blasting Method ◽  
Furnace Scale

ALGOMA AR225

Alloy Digest ◽  
2003 ◽  
Vol 52 (12) ◽  
Keyword(s):  
Carbon Steel ◽  
Chemical Analysis ◽  
Physical Properties ◽  
Carbon Content ◽  
Brinell Hardness ◽  
Low Cost ◽  
Heat Treating ◽  
Rolled Plate ◽  
High Carbon ◽  
High Carbon Content

Abstract Algoma AR225 is a carbon steel developed primarily to supply a low-cost material for high-abrasion applications. It is furnished in the form of as-rolled plate with a relatively high carbon content (0.35-0.45%). AR-225 is sold on the basis of chemical analysis only; the number 225 signifies the approximate Brinell hardness. On thicknesses one-half inch and over, this Brinell value may be lower than 225 because of higher finishing temperatures. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: CS-138. Producer or source: Algoma Steel Corporation Ltd.

XAR 400

Alloy Digest ◽  
2014 ◽  
Vol 63 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Structural Steel ◽  
Tensile Properties ◽  
Heat Treating ◽  
Rolled Plate ◽  
Wear Resistant ◽  
Heavy Plate ◽  
Key Factor

Abstract XAR 400 (No. 1.8714) is a wear-resistant structural steel as heavy plate that is normalized or normalized rolled plate. XAR (extra abrasion resistant) steels are solutions for applications where wear is a key factor. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on wear resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-704. Producer or source: ThyssenKrupp Steel Europe AG.

XAR 300

Alloy Digest ◽  
2014 ◽  
Vol 63 (4) ◽  
Keyword(s):  
Structural Steel ◽  
Heat Treating ◽  
Rolled Plate ◽  
Wear Resistant ◽  
Heavy Plate

Abstract XAR 300 (No. 1.8704) is a wear-resistant structural steel as heavy plate that is normalized or normalized rolled plate. This datasheet provides information on composition and hardness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-699. Producer or source: ThyssenKrupp Steel Europe AG.

scholarly journals The Efficiency of Large Hole Boring (MSP) Method in the Reduction of Blast-Induced Vibration

2021 ◽  
Vol 11 (4) ◽  
pp. 1814
Author(s):  
Min Seong Kim ◽  
Sean Seungwon Lee
Keyword(s):  
Urban Areas ◽  
Cost Effective ◽  
Base Case ◽  
Large Hole ◽  
Promising Alternative ◽  
Geological Information ◽  
Drill And Blast ◽  
Smooth Blasting ◽  
Alternative Designs ◽  
Blasting Method

Drill and blast is the most cost-effective excavation method for underground construction, however, vibration and noise, induced by blasting, have been consistently reported as problems. Cut blasting has been widely employed to reduce the blast-induced problems during underground excavation. We propose that the large hole boring method using the state-of-the-art MSP (Multi-setting smart-investigation of the ground and pre-large hole boring) machine (“MSP method”) can efficiently improve vibration reduction. The MSP machine will be used to create 382 mm diameter empty holes at the tunnel cut area for this purpose. This study assessed the efficiency of the MSP method in reducing blast-induced vibration in five blasting patterns using a cylinder-cut, which is a traditional cut blasting method. The controlled blasting patterns using the MSP method demonstrated up to 72% reduction in blast-induced vibration, compared to the base case, Pattern B, where only cylinder-cut and smooth blasting method were applied. Therefore, the MSP method proves to be a promising alternative for blasting in sensitive urban areas where non-vibration excavation techniques were initially considered. Geological characteristics of 50 m beyond the excavation face can be acquired through the proposed real-time boring data monitoring system together with a borehole alignment tracking and ground exploration system. The obtained geological information will be a great help in preparing alternative designs, and scheduling of construction equipment and labour during the tunnel construction.

scholarly journals Intelligent Classification Model of Surrounding Rock of Tunnel using Drilling and Blasting Method

2020 ◽  
Author(s):  
Mingnian Wang ◽  
Siguang Zhao ◽  
Jianjun Tong ◽  
Zhilong Wang ◽  
Meng Yao ◽  
...  
Keyword(s):  
Surrounding Rock ◽  
Classification Model ◽  
Blasting Method

The production of hot-rolled plate steel with reduced tolerances

Metallurgist ◽  
1974 ◽  
Vol 18 (11) ◽  
pp. 853-854
Author(s):  
Yu. V. Konovalov ◽  
L. B. Gorskii ◽  
A. E. Rudnev ◽  
V. P. Samoilov ◽  
G. I. Manshilin ◽  
...  
Keyword(s):  
Rolled Plate ◽  
Plate Steel ◽  
Hot Rolled

Influence of Thermal Simulated and Real Tandem Submerged Arc Welding Process on the Microstructure and Mechanical Properties of the Coarse Grained Heat Affected Zone

2011 ◽  
Vol 110-116 ◽  
pp. 3191-3198
Author(s):  
Sadegh Moeinifar
Keyword(s):  
Grain Boundaries ◽  
Heat Affected Zone ◽  
Heat Input ◽  
Arc Welding ◽  
Welding Process ◽  
Submerged Arc Welding ◽  
Rolled Plate ◽  
Arc Welding Process ◽  
Submerged Arc ◽  
Tandem Submerged Arc Welding

The high-strength low-alloy microalloyed steel was procured as a hot rolled plate with accelerated cooling. The Gleeble thermal simulated process involved heating the steel specimens to the peak temperature of 1400 °C, with constant cooling rates of 3.75 °C/s and 2 °C/s to room temperature. The four-wire tandem submerged arc welding process, with different heat input, was used to generate a welded microstructure. The martensite/austenite constituent appeared in the microstructure of the heat affected zone region for all the specimens along the prior-austenite grain boundaries and between bainitic ferrite laths. The blocky-like and stringer martensite/austenite morphology were observed in the heat affected zone regions. The martensite/austenite constituents were obtained by a combination of field emission scanning electron microscopes and image analysis software The Charpy absorbed energy of specimens was assessed using Charpy impact testing at-50 °C. Brittle particles, such as martensite/austenite constituent along the grain boundaries, can make an easy path for crack propagation. Similar crack initiation sites and growth mechanism were investigated for specimens welded with different heat input values.

Abrasive Wear Research on Rubber

1961 ◽  
Vol 34 (2) ◽  
pp. 482-492 ◽  
Author(s):  
K. Wellinger ◽  
H. Uetz
Keyword(s):  
Abrasive Wear ◽  
Abrasion Resistance ◽  
Testing Methods ◽  
Sand Blasting ◽  
Testing Conditions ◽  
Different Types ◽  
Paper Method ◽  
Abrasive Paper ◽  
Blasting Method

Abstract The abrasion resistance of five different types of rubber were compared with steel (St 37) by various testing methods, such as the abrasive paper method, the abrasion cup method and the sand blasting method. The order of resistance of the various types of rubber against sand blasting is different from the order which is obtained with the sandpaper and abrasion cup methods. However, variations of the testing conditions within one method generally does not change the order. It has been shown, that rubber is more resistant against sand blasting than other materials investigated (basalb, malleable steel, non-alloyed hard castings) if the sand blast is directed essentially perpendicularly against the tested surface.

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