Using the main hoist, each crane is capable of lifting a maximum of 10,000 t (11,000 short tons) at a radius between 27 to 48 m (89 to 157 ft) lifting capacity drops to 7,000 t (7,700 short tons) at a radius of up to 62 metres (203 ft), and 4,000 t (4,400 short tons) at 82 m (269 ft) radius the maximum operating radius using the main hoist is 102 metres (335 ft). The large port and starboard cranes were fabricated at Huisman's factory in Xiamen, China, and shipped in pieces to Singapore the BigRoll RoRo ships Baffin (now BigLift Baffin) and Beaufort were used to ferry the crane houses, luffing frames, winch frames and booms along with other large pieces in 2018. Įach luffing frame weighs 1,170 t (1,290 short tons), and each boom weighs 1,465 t (1,615 short tons).
The crane house is secured to the foundation using 1,100 bolts 82 mm (3.2 in) in diameter, held in place by nuts weighing more than 40 kg (88 lb). Prior to the cranes for Sleipnir, the largest bearings Huisman had used for tub-mounted cranes were only 12 m (39 ft) in diameter. Conventional tub-mounted cranes ride on bogies or wheels, while the Huisman 10,000t cranes use the bearing directly. The slewing system, which allows the cranes to rotate in their tub, uses the world's largest bearings at 30 m (98 ft) in diameter. The two large port and starboard tub-mounted cranes are provided by Huisman overall boom length is 144 m (472 ft). Sleipnir outside Aibel in Haugesund, Norway After its completion in 2019, SSCV Sleipnir succeeded Heerema's earlier SSCV Thialf as the largest crane vessel in the world. It was ordered in 2015 and built in Singapore by Sembcorp Marine. The vessel is equipped with two revolving cranes built by Huisman Equipment B.V., each with a capacity of 10,000 t (11,000 short tons) the main cranes can be operated in tandem to jointly lift 20,000 t (22,000 short tons). It is named for Sleipnir, the eight-legged horse ridden by Odin in Norse mythology. SSCV Sleipnir is a semi-submersible crane vessel (SSCV) owned and operated by Heerema Marine Contractors. Sleipner attains this high hardness level because of the fine blend of Carbon, Manganese, and Vanadium in its composition, this makes it a good choice for a knife blade.12 × 8 MW dual-fuel engines ( MGO or LNG) Ĩ Wärtsilä azimuth thrusters (4 forward, 4 aft), 5.5 MW each Steel types whose hardness goes beyond 60HRC are considered hard steel and this makes our steel of the day very hard steel. However, the hardness varies with the heat treatment used by the manufacturer. Sleipner steel hardness is 62-64 as per the Rockwell hardness scale. Sleipner properties Sleipner Steel Hardness Silicon Si 0.90%: Increases strength and heat resistance.Manganese Mn 0.50%: Increases Hardness and brittleness.Vanadium acts by improving the grain structure and the carbide structure of the steel. Vanadium V 0.50%: Increase wear resistance and toughness, it also improves corrosion resistance.Molybdenum Mo 2.50%: It improves machinability and gives Sleipner steel the characteristic air-hardening property.
0 kommentar(er)
