Use of the main advantages of titanium construction of submarines

1960s, the United States and the Soviet Union formed a relatively stable titanium and titanium alloys and welding technology, titanium and titanium began to be used to build naval vessels. Taking into account such factors as cost, titanium and titanium alloys are mainly used in the manufacture of submarine pressure hull, the United States and the former Soviet Union on a multi-class submarines were used titanium material, including titanium pipe price used in the former Soviet submarine in the manufacture of the world's leading level.

Use titanium construction of submarines main advantage of titanium material properties corresponding to expand the submarine ride Shen advantage describe the scope of the seabed, and by reducing the likelihood of anti-submarine zone submarine depth charges hit the public considered to be high-intensity or greater than the strong dive depth delay propeller empty The emergence of the bubble, reduce propeller noise low magnetic radiation to reduce the likelihood of finding the submarine Magnetic Detector greater displacement of low-density expansion of the submarine interior space, more weapons and equipment to accommodate
Roughly 1960 years ago, the former Soviet Union completed the technical preparations titanium materials processing and welding, etc., and then built using titanium pressure hull of a Class A (alpha level) submarines, surface displacement of 2300 tons, limit potential depth 400 m. Since then, the former Soviet Union became a naval build A, M, P, S four titanium alloy plate submarine pressure hull,
All levels of the former Soviet submarine titanium shell

Displacement speed Model Code Type dive deep water / underwater (t) limit / Work (m) water / underwater (section)
The number of active cases construction
661 P-class cruise 5197/7000 550/400 25 / 44.7 1 decommissioning
705,705K A class attack 2300/3180 400/320 14 / 41.0 7 dismantling
685 M-class attack 5880/8500 1250/1000 14 / 30.6 1 sinking
945,945A S class attack 6470/8500 600/480 18/35 43 vessel which service Source: Huatai Securities Institute finishing

Due to confidentiality reasons involving our military submarine unknown, but estimates have been developed in an orderly manner submarine. Reference - absorption - Innovation - localization is the reality of our current choice, once applied to future large-scale naval boat ship, titanium tubing demand will further open space.

Titanium aluminum production technology

Aluminum titanium gold craft belonging coating technology, it is to increase pre-plating and electroplating process steps in the conventional process based on titanium, pre-plating process is placed plating solution and hydrochloric acid salt is chemically treated activated after; Plating bath composition include nickel sulfate, nickel chloride, boric acid, sodium lauryl sulfate, saccharin, brightener, the process is simple, practical, good effect, etc., the process obtained its titanium foil aluminum film hardness HV≈1500, under the same conditions than wear and 22K gold-plated 150 times, can be processed into various forms of gold, color, black and other bright variety series aluminum products.

Aluminum titanium gold process, including selection, polishing, chemical degreasing, rinse, activation, titanium vacuum process steps, characterized in that it comprises:

a, pre-plating process which is activated after the rinse by the titanium grade 2 sheet and aluminum to liquid by the salt, hydrochloric acid and water in the chemical treatment, the treatment temperature is room temperature, the processing time to a heated liquid chemical reaction so far;

b, plating process, the process bath composition comprising nickel sulfate, nickel chloride, boric acid, sodium lauryl sulfate, saccharin, brighteners, process conditions: current 3-4A / dm2 cathode move, 5-7A / dm2 air mixing, bath temperature 50-60 ℃, PH value of 3.9-4.2, plating time of 15 minutes.

titanium wires and surface cleaning method

titanium wires surface reasonable, mainly referring to the titanium wire surface degreasing and paint,surgical implant titanium remove dirt and other foreign residues. Provide surface clean wool. To avoid contamination and scratches in the thermoforming process. Avoid contamination of fine parts in the heat treatment, welding and other thermal processing step, and to ensure a good surface coating and plating. Available gasoline, acetone,medical grade titanium alcohol and other solvents to clean the surface of titanium wire, but this method is not ideal. Using three ethylene steam degreasing atmosphere, plus inhibitor during degreasing, very good. Sodium hydroxide solution and the like is also useful as a cleaning agent, an alkaline degreasing method.
Chen oil or cleaning,titanium plates for sale parts or wool available water film surface quality inspection method test. The part is immersed in cold water, then put the parts from the water one, if the parts clean surface water film will connect into pieces; if the surface of the oil at the end of divisible, then the water film is not continuous.