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.

Current use of vanadium and titanium resource

Vanadium Titanium is an important strategic material, size and level of development of vanadium and titanium industry, the national economy and national defense construction has a significant impact. Our bears abundant vanadium-titanium magnetite resources, mainly in Panzhihua, Sichuan and Hebei Chengde. Panxi vanadium and titanium grade 2 resources are our most enriched regions, vanadium-titanium magnetite prospective reserves of over 10 billion tons, of which vanadium, titanium reserves accounted for 63% and 90.5%, respectively, the country, in third place in the world, the first one .

Of vanadium and titanium in the use of resources and materials preparation and processing technology has initially formed a relatively complete system. Nevertheless, due to the strength and depth of scientific understanding is still lagging behind in industrial production practices, in particular the important advantage of lower degree of extraction of the metal elements (iron ore terms, vanadium recovery is not more than 50%; with ore meter, recovery of titanium does not exceed 10%), a number of important scientific and technological issues remain unresolved, the relevant scientific issues also need to be examined. Currently the core issue of vanadium and titanium plate for sale resources exist metallurgical process is the process of vanadium and titanium metallurgy valuable component to strengthen the migration rule and the effective separation of missing and incomplete theory.

Mineral surface technology - the interface properties of vanadium and titanium reduction characteristics of the role of law, the formation of vanadium slag, computing and roasting process vanadium oxide spinel, vanadium, calcium, sodium vanadate structure evolution and its impact factors in the experimental and theoretical study titanium-containing ore slag temperature phase reconstruction process mechanism and regulation methods, electromagnetic field, vanadium-titanium magnetite ore mineral reconstruction (or genetic characteristics), a profound understanding of the external field, the interface properties and minerals to strengthen the interaction between the reconstructed law. Kinetics of vanadium and titanium component with the international migration and its influencing factors. Kinetics of complex multiphase interface / Electrochemistry and valuable component transfer process, solidified slag with the valence valuable component in the Distribution of the phases, and has a price component interfaces in multiphase interface dissolution and ion the role and impact of the transfer rule, titanium-vanadium-titanium magnetite oxide electrolysis process migration and separation mechanism, promote vanadium-titanium component in the efficient transfer of improved and more efficient allocation than white.

R & D status Titanium

Relative titanium sponge, since the development of aerospace technology, has been very active in research and development of titanium. From basic research to study properties of the alloy, to applied research have made great progress.

Basic research, interstitials impact strength and bulk modulus of titanium research, composite interface behavior finite element simulation study, ordered alloy strengthening research, alloys interaction of atoms and vacancies, etc. have made progress. In order to meet the performance requirements of applications in different fields of titanium wire manufacturers, alloy design display space, with remarkable results. Used in aerospace field BT 3 7 alloy, NI N CT 2 0 alloy, NI NT i a 600 alloy, T i a 60 alloy, "I T1 5 D alloy, NI NT i a 40 alloy, NI NT i a 26 alloy, and NI N TP a 650 alloy is representative of the new grade alloy materials research at home and abroad in recent years, to meet the different components of the material application performance requirements, and some can reduce costs, reduce quality study of high temperature titanium alloys (such as T i 5 3 3 1 1 S) is also a hot spot [16]; apply to ships in the field of T imeta l 5 1 1 alloy, NI NT i -B 1 9 alloy and NI NT i have a 91 alloy significantly improved in toughness, corrosion resistance and sound transmission, etc., for large ships (such as aircraft carriers) manufacturing and marine industry has a positive role in promoting development in the biological field mainly uses Z r, N b, T a, P d and sn as grade 1 titanium wire element to enhance the mechanical properties and biocompatibility, such as T i a 3 5 Z r - l ON b alloys and T i a 2 9 N b a 1 3 T a a 4. 6 Z r alloys, etc. In recent years, the development of bone material, Tsinghua University is a typical representative of the biological field applications. civilian areas widely used a golf club called KS -T il 9 grades of alloy, making the cost of a substantial decline, quality.

In recent years, due to the promotion of civilian titanium, titanium applied research in the construction, automotive, marine engineering, medical, and sports and other aspects began to increase, especially in the field of application of desalination has attracted wide attention, medical titanium 1, C 2 0 ( T i a 6 A 1 -7 N b) the products have been in clinical use.

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.

Note the use of titanium welding wire

1, construction workers and welders should wear clean white fine gauze gloves (non-wearing cotton gloves).
2, the weld area treated and non-contact touch iron items.
3, welding work as much as possible in titanium bar supplier the room, the ambient wind speed should ≤0.5m / s, avoid the drafts affected.
4, welding wire when titanium welding with short arc welding, the use of small heat input welding, the welding nozzle and the holding angle of 70 to 80 degrees.
5, taking over the position welding,grade 3 titanium butt gap is generally about 0.5mm.
6, each weld should be possible once finished welding, seam welding must be connected before the weld interface should be clean, weld meat lap length is 10 ~ 15mm.
7, when the welding torch should not swing around, wire melting end not out of gas reserves.
8, ahead of the welding arc when aspirated, not lifted immediately when the torch extinction, should be delayed gas, until the temperature drops below 250 ℃.
9, a gas mask and protective distance drag the torch should be the shortest better,Titanium tube supplier seek contact with the wall of the smallest gap. When the tube butt welding, forming side welding in order to achieve the requirements of the welding carried out twice: once for the back cover welding (welding when you can not back fill material), and another for forming welding. When the multi-layer welding, must wait before a weld completely cooled, then the next weld bead.

titanium welding wire operation essentials

1, manual welding, weldment between the wire and should be kept to a minimum angle (10 ~ 15 °).medical titanium alloy Wire along the pool front smooth, uniform into the pool, not the end of the wire out of the argon gas reserves.
2, titanium welding wire welding torch without substantially horizontal swing, the swing when required, the frequency is lower,Medical titanium bar the swing amplitude is not too large, in order to prevent the effects of the protection of argon.
3, when the arc and weld finishing off, to continue through argon, until the weld metal and heat affected zone is cooled to remove the gun before the time below 350 ℃.