‍Marine titanium welding process

In recent years, many new ships began extensive use of titanium alloy . With the increase in the amount of titanium alloy materials , shipyard welding to Titanium Welded Tubes enhance efficiency , product quality and stability , the need to develop some efficient titanium welding process. TA5 two kinds of titanium Shanghai Jiangnan Shipbuilding in thickness of 4mm Ti70 and 16 mm for welding object, plasma arc welding , laser welding and laser - arc hybrid welding titanium welding three high energy density of the process carried out explore, get the excellent performance of welded joints
A plasma arc welding
Plasma arc welding is the use of plasma arc welding method as a heat source . Gas heated by the arc generated from the solution , a nozzle at high speed compressed by water , and increasing the energy density of the solution from forming a plasma arc. Its stability , heat and temperature are higher than the arc , and thus has a greater penetration power and welding speed . For marine titanium welding tests show that plasma arc with concentrated energy , penetration , side welding good shape , no tungsten inclusions , less porosity , etc. , it is very suitable for welding of titanium and titanium alloys . More plasma arc welding process parameters , when the method is mainly related to the use of orifice nozzle diameter , titanium bicycle frames welding current, plasma gas flow rate , welding speed , shielding gas flow.
Second, laser welding
Laser welding is a focused laser beam as the heat energy generated by the bombardment of the weldment for welding a high -precision welding method . Laser welding due to the high energy density, obtained greater penetration and high welding speed , and because the diameter of the laser beam is extremely small, so narrow weld and heat -affected zone , the welding residual stress and deformation is small . The main parameters of laser welding laser welding power , welding speed , defocusing amount , side-blown gas flow and shielding gas flow. Since the laser welding high welding speed , the welding process generally can not adjust the parameters of the process , so before the formal optimum welding parameters to be determined by a combination of pre- experiments.
Third, the laser - arc hybrid welding
Compared with conventional arc welding and laser welding, laser - arc hybrid welding weld penetration with a large , high process stability , high welding efficiency , strong weld gap bridging ability and welding deformation , etc., can greatly improve the welding efficiency and weld quality. Laser - arc hybrid welding can reduce the workpiece machining accuracy requirements groove welds may be titanium bicycle part improved over time high laser welding shortage and liquid bath due to higher absorption of the laser beam , laser welding can be compared greater penetration and a higher welding speed . Using laser - arc hybrid welding , laser and arc due to the presence of two heat sources , and each heat are more parameters to be adjusted , so make the laser and arc harmonic match with a lot of tests need to be explored .
Jiangnan Shipbuilding technology test results conducted show that plasma arc welding , laser welding and laser - arc hybrid welding excellent joint performance of the welded test plate . Process repeatability, low level requirements for welders , it is very suitable for the production of large quantities of rules seam welding. Mechanical test results showed that: the mechanical properties of butt joints meet the standard requirements, joint strength and ductility in the match with a reliable base metal Ti70; plasma arc welding and laser - arc hybrid welding using low intensity TA10 wire welding Ti70 plates, welding joint seam strength far exceeds the requirements of matches with Ti70 , which makes titanium alloy welding consumables when marine greatly broaden the range of options available in between strength and ductility, toughness seek to better balance.

‍Marine titanium welding process

In recent years, many new ships began extensive use of titanium alloy . With the increase in the amount of titanium alloy materials , shipyard welding to Titanium Welded Tubes enhance efficiency , product quality and stability , the need to develop some efficient titanium welding process. TA5 two kinds of titanium Shanghai Jiangnan Shipbuilding in thickness of 4mm Ti70 and 16 mm for welding object, plasma arc welding , laser welding and laser - arc hybrid welding titanium welding three high energy density of the process carried out explore, get the excellent performance of welded joints
A plasma arc welding
Plasma arc welding is the use of plasma arc welding method as a heat source . Gas heated by the arc generated from the solution , a nozzle at high speed compressed by water , and increasing the energy density of the solution from forming a plasma arc. Its stability , heat and temperature are higher than the arc , and thus has a greater penetration power and welding speed . For marine titanium welding tests show that plasma arc with concentrated energy , penetration , side welding good shape , no tungsten inclusions , less porosity , etc. , it is very suitable for welding of titanium and titanium alloys . More plasma arc welding process parameters , when the method is mainly related to the use of orifice nozzle diameter , titanium bicycle frames welding current, plasma gas flow rate , welding speed , shielding gas flow.
Second, laser welding
Laser welding is a focused laser beam as the heat energy generated by the bombardment of the weldment for welding a high -precision welding method . Laser welding due to the high energy density, obtained greater penetration and high welding speed , and because the diameter of the laser beam is extremely small, so narrow weld and heat -affected zone , the welding residual stress and deformation is small . The main parameters of laser welding laser welding power , welding speed , defocusing amount , side-blown gas flow and shielding gas flow. Since the laser welding high welding speed , the welding process generally can not adjust the parameters of the process , so before the formal optimum welding parameters to be determined by a combination of pre- experiments.

True and false of titanium sponge rods how to judge

Now, the application of titanium alloy rods is more and more widely, with the continuous development of society, some people in order to covet interests, produce fake of titanium alloy rods, shoddy, sales to the customer, make a lot of damage to customer interests, therefore we need to know how to judge the true and false of titanium alloy rods, avoid buying home of titanium alloy rods. Below, will introduce you to judge true and false of titanium alloy rods.

Judge true and false of Titanium Graphite Mold Casting rods the simplest method is the weigh in hand, if feel lighter, so may be pure titanium rod, this is the difference between titanium and the titanium frame is one of the most simple way.Because when the proportion of Sunrui titanium golf clubs frame is about 8.9 g/cm3, and the proportion of pure titanium frame is 4.5 g/cm3, titanium rod weight equal to half of the alloy frame. Weld mark as "steps"; Spot welding, the welding of titanium alloy rods investigate the nasal stem and the weld of box, and pure titanium material welding for anaerobic touch welding. Weld mark as "slope", this is the difference between titanium and titanium frame, titanium and non-uniform titanium frame of one of the useful way.

So, to see if there are any more gaskets, hinge place is the difference between pure titanium rods of a more effective method.

Some common titanium products

Titanium washing tower is installed on the incinerator for processing very low levels of radioactive waste . The device has been put into use in 1973 , titanium pumps the operating temperature of 160 a 250 ℃. According to the results of the last inspection , the titanium device is not found evidence of corrosion .
    Recently, the scrubber waste heat boiler in a pulp mill on the uniforms of water have been used titanium plates . 3l6L originally designed using stainless steel, 1979 replaced with titanium plates dehydrating it . These dehydrated plate for 120 ℃, pH value of the water cycle water cycle 3-4 aggregate a large number of hydrogen sulfide and sulfur dioxide gas . Using the results are quite satisfactory , and therefore , the plant plans to other scrubber systems all use titanium plate dehydration .
    Titanium is also being used in addition to the ttitanium valve need from the scrubber wash hydrogen chloride , and have achieved good results . The column was washed at a temperature of 140 ℃, pH value of 10-11 , a sodium hydroxide solution after two cycles of operation , the frame and mesh of titanium are not corroded . Therefore , the plant engineering have made handsome would rather invest in titanium does not require maintenance , rather than using plastic or fiber- reinforced plastic titanium pump Branch (FRP).

13 years of industry subsidence trough titanium sponge titanium industry-wide losses

‍013 years of industry subsidence trough titanium sponge titanium industry-wide losses
December 2013 Titanium Market Review

This month perovskite thin market , aerospace investment casting traders expect downstream manufacturers can then take advantage of the phenomenon appears Dongchu stocking raise ore price , but on the downstream market before the Spring Festival perovskite save more bearish attitude , procurement were significantly hesitate Dongchu stocking phenomenon later later in the future. And near the end , the buyer Yakuan serious , some businesses are willing to boost sales of low-cost shipping return cash flow. Imported ore more or less supported by the outer disk costs , limited the decline , while the Panzhihua region ore price confusion, repeated exposure to small factory prices low.
New Year's Eve , some Chinese companies have discontinued slag and advance into the Chinese New Year holiday state. Given the current trading price of the product is too low, the majority of companies have presented a loss. Affected companies choose slag based on customer orders to schedule production, lower overall industry operating rates. Meanwhile, the 2013 annual market performance is more sluggish domestic acid soluble chloride slag and slag showed a state of oversupply . titanium bicycle frames According to the Swiss road network is understood that there are some domestic enterprises chloride slag small amount of inventory , and the acid-soluble slag inventory is relatively high. In addition, due to the widespread downstream buyers to delay the payment date , the current domestic enterprises slag poor liquidity and high financial costs.
State Reserve policy affected by early December , some titanium sponge titanium sponge enterprises to improve the sales price , the highest price of 0 # titanium sponge over 52,000 yuan / ton. However, due to the downstream repercussions dull , no corporate procurement , the price has become a castle in the air , then quickly dropped to 4.9 yuan to 50,000 yuan / ton price . Titanium Casting Golf Heads According to a company official said titanium sponge , although the state had acquired a certain size , but because of the large amount of inventory on the market earlier , coupled with the downstream demand is not ideal , so despite favorable policies , but did not change the current market downturn titanium sponge trend. As of the end of December 2013 , the domestic price of titanium sponge is only 1000 yuan / ton symbolically raised , and the actual volume is still maintained at a low level. In addition, the purchasing and storage operations led some companies to obtain the melting orders for titanium ingot processing enterprises inject some vitality. However, due to the downstream market remains in the doldrums , making the purchasing and storage policies benefiting a narrow face .
Subsidence trough titanium sponge titanium industry wide losses
Throughout 2013 , we can say the whole titanium industry has experienced a very difficult year , the most obvious manifestation is the price of all products falling almost all year . Among them, the import price of titanium dropped from the beginning of 2300 yuan / ton to the end of 1600 yuan / ton , down 30% ; 90 slag fell from the beginning of 8000 yuan / ton to 5,800 yuan to 6,000 yuan / ton , down more than 25% ; 0 # titanium sponge price from 66,000 yuan in early / ton decreased to 4.9 yuan to 50,000 yuan / ton, down about 25 %. Currently, the price of titanium sponge was significantly lower than its cost , the titanium bicycle part companies are operating at a loss situation, few companies have been forced to stop production .
Affected by the downturn in the overall economic environment in 2013, non-ferrous metals industry generally face greater difficulties. Under this background , the titanium industry is not immune . Downstream products unsalable forcing down prices upstream manufacturers of raw materials, while the upstream companies had gradually compromise, bottom- price surges gradually spread to the entire industry . In addition, various manufacturers feel uncomfortable phenomenon is the decline in prices can not be picked up in exchange for sales , customer purchases always in tepid state.

Titanium castings in the aerospace engine usage and comparison of forgings

Titanium castings in the aerospace engine usage and comparison of forgings , can be seen, titanium precision casting with clear growth trend will gradually reach the amount of titanium forgings for each equivalent level. In particular, the application of cast titanium in civilian areas , for example, if the casting can be mass produced with great golf club head , which promote the use and development of cast titanium alloys . In China, Aerospace titanium casting for example , the country 's GDP growth in recent years, casting titanium rose more than tenfold. I cast titanium alloy and is in a stage of rapid development .

What is a high purity titanium sponge

1, titanium sponge is produced by magnesium reduction distillation process, its refining is used in the production process of vacuum distillation, the product is loose pores, shaped like a sponge, so its name.
2, titanium sponge titanium is the metal in the production of a commodity, needs the further get titanium ingot casting namely pure titanium, and then processed into corresponding titanium or titanium alloy.
3, titanium sponge broken way different manufacturers have different crushing process, but the basic principle of the broken is mainly on the principle of extrusion or shear breakage.
4, titanium sponge lump formation is mainly due to the local temperature is too high, in the production process and high temperature sintering, lump has a great influence for downstream users production is, in general will lump as raw materials for the production of titanium powder is a better treatment method.
5, the processing of titanium tuo mainly facilitate grading, because titanium tuo of the quality of each part is different, edge of skin part was of poor quality, mainly high iron content and sintering hardness is larger.Titanium tuo in relatively besides edge skin and the center position, the rest of the quality is relatively good.

Comparison method for industrial production of titanium sponge

Sponge titanium production quantity by Kroll, accounts for more than a total of 80% world production of sponge titanium. Klau Apha is the advantage of the purification by distillation of the products of good quality, chlorine content is low, in favor of processing smelting.

  Chlorine content and gas Hunter method of product impurities, processing and smelting difficult, but less investment, finished product size of titanium sponge alloy for small.

  Easy preparation, powder metallurgy.