Luo Luo was awarded a design and equipment contract for a tail trawler

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A few days ago, the Norwegian shipyard Kleven and Rolls-Royce signed a design and equipment contract for a tail trawler ordered by Spain's Pesquera Ancora SLU.
Luo Luo was awarded a design and equipment contract for a tail trawler
The tail trawler will be designed with Rolls-Royce's NVC 374 WP and is scheduled to be delivered from the Kleven Myklebust shipyard in the first quarter of 2018. This is the fourth time that a ship built by Kleven has adopted the same design contract as Rolls-Royce.
It is reported that the tail trawler is 80 meters long and the hull is ICE 1A*. It will be equipped with a large number of Rollo equipment, including main engine, auxiliary machine, HSG propulsion system, automation equipment, winch and fuel-saving wave-through design. The main considerations in the ship design process and equipment matching are to improve operating efficiency, reduce emissions, improve crew comfort and safety, and excellent seaworthiness.
The tail trawler will be equipped with a shipyard for the production of fish fillets. The ship has a storage capacity of 1,400 cubic meters. There is also a packaging and freezer room with a space of 550 cubic meters on the deck.
Since the 1970s, Rolls-Royce has designed approximately 130 NVC-type fishing vessels for the fishing sector. Rolls-Royce's current design and equipment matching ship orders include 7 trawlers and 2 live fish carriers.

Tungsten Powder

It is a gray-black metal with metallic luster (body-centered cubic crystal). Melting point 3400 ℃. Boiling point 5555℃. The hardness of tungsten is the hardest among metals. The hardness of the sintered Tungsten Rod is 200~250, and the tungsten rod passed through the rotary hammer is 350~400. Soluble in mixed acid of nitric acid and hydrofluoric acid. Melt with a mixture of sodium hydroxide and sodium carbonate. Slightly soluble in nitric acid, sulfuric acid, aqua regia; insoluble in water, hydrofluoric acid, potassium hydroxide. Tungsten is available in two variants, a and B. At standard temperature and atmospheric pressure, type a is a stable body-centered cubic structure. Type B tungsten can only appear in the presence of oxygen. It is stable below 630 °C, and is converted into a-tungsten above 630 °C, and this process is irreversible. Tungsten is mostly used in the production of cemented carbide and ferrotungsten. Tungsten and chromium, molybdenum and cobalt form heat-resistant and wear-resistant alloys for making tools, metal surface hardening materials, gas turbine blades and combustion tubes, etc. Tungsten and tantalum, niobium, molybdenum, etc. form refractory alloys. Tungsten copper and tungsten silver alloys are used as electrical contact materials. High-density tungsten-nickel-copper alloy is used as a radiation shield. Metal tungsten wires, rods, sheets, etc. are used to make parts of light bulbs, electronic tubes and electrodes for arc welding. Tungsten powder can be sintered into filters of various porosity. FW-1 is used as raw material for large slab and tungsten-rhenium galvanic couple. FW-2 is used for contact alloy, high specific gravity shielding material. FWP-1 is used for plasma sprayed materials.
Tungsten powder is the main raw material for processing powder metallurgy tungsten products and tungsten alloys. Pure tungsten powder can be made into wire, rod, tube, plate and other processed materials and certain shaped products. Tungsten powder mixed with other metal powders can be made into various tungsten alloys, such as tungsten-molybdenum alloy, tungsten-rhenium alloy, tungsten-copper alloy and high-density tungsten alloy. Another important application of tungsten powder is to make tungsten carbide powder, and then prepare cemented carbide tools, such as turning tools, milling cutters, drills and molds.

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