Sealing control core of Baoji Dingding titanium | titanium alloy ball valve core forging under extreme conditions

As the "key executive part" of fluid control, the valve core of titanium alloy ball valve directly determines the sealing performance, service life, safety and reliability of the ball valve, especially under extreme conditions such as strong corrosion, high pressure and high temperature, its material advantage is more prominent. Relying on the forging technology accumulation of "China Titanium Valley", Baoji Dingding titanium products Co., Ltd. focuses on the R&D and production of titanium alloy valve cores of TC4, TA2, TC11 and other mainstream brands. Through the integrated process of "precision forging+CNC fine grinding", the roundness error of valve core is ≤ 0.005mm, and the roughness of sealing surface RA is ≤ 0.4 μ m, which perfectly meets the stringent fluid control requirements in the fields of chemical industry, petroleum, shipbuilding, nuclear power and so on.

1、 Core advantage: irreplaceable value of titanium alloy valve core

Compared with traditional valve cores such as stainless steel and copper alloy, titanium alloy valve core shows performance advantages under extreme conditions, and solves the industry pain points such as easy corrosion, seal failure and short service life of traditional valve core:

Global corrosion resistance

The dense oxide film formed on the surface of titanium alloy can resist strong corrosive media such as hydrochloric acid, sulfuric acid, seawater, crude oil, etc. the corrosion rate of 5000 hours salt spray test is ≤ 0.0002mm/year, and the service life of the valve core in the chemical strong corrosive environment is more than 10 times longer than that of the traditional valve core.

High pressure sealing performance

TC4 titanium alloy valve core has tensile strength ≥ 960mpa, no weld defects after overall forging, flatness error of sealing surface ≤ 0.01mm, can withstand high pressure ≤ 42MPa, and realizes "zero leakage" sealing, which is 50% higher than the pressure limit of stainless steel valve core.

Wear resistance and erosion resistance

The hardness of the sealing surface of the valve core after enhanced treatment reaches HRC35-40, which can resist the erosion and wear of the fluid containing particles. In the medium of crude oil transportation, the wear amount of the valve core is 80% lower than that of the copper alloy, reducing the cost of frequent replacement.

Wide temperature range adaptation

It has stable performance in a wide temperature range from -50 ℃ (polar pipeline) to 450 ℃ (high temperature fluid), without risk of low-temperature embrittlement and high-temperature creep, and is suitable for fluid control scenarios in different regions and media.

2、 Core brand and customized specification: precisely match the type of ball valve

According to the requirements of ball valves under different working conditions, it provides standardized and customized valve core solutions, covering the full specification requirements from household small caliber to industrial large caliber ball valves:

It supports the customization of special-shaped valve cores (such as V-type, O-type and L-type). The sealing surface grinding and coating strengthening (such as titanium nitride coating) can be carried out according to the sealing requirements of ball valves. The delivery cycle of the whole process from forging to finished products is as low as 15 days, and the green production channel is opened for emergency orders.

3、 Core application field: scene based landing of fluid control

1. oil and gas field: the "control core" of high-pressure corrosion

Titanium alloy valve core is suitable for the harsh working conditions of oil and gas exploitation and transportation to ensure the safety of fluid control:

-TC4 titanium alloy valve core is used for high-pressure ball valve for shale gas exploitation, which can withstand 42MPa high pressure and sulfur-containing natural gas corrosion, and the sealing surface of valve core has no leakage, with a service life of more than 5 years, which is 8 times longer than that of stainless steel valve core;

-TA2 pure titanium valve core is suitable for crude oil delivery ball valve to resist the corrosion of sulfides and salts in crude oil, avoid jamming caused by valve core corrosion, and ensure the continuous operation of oil pipeline.

2. chemical industry: a "safety barrier" for highly corrosive media

Facing the highly corrosive fluid in the chemical industry, the titanium alloy valve core realizes "zero leakage" control:

-TA2 pure titanium valve core is used for the ball valve at the outlet of hydrochloric acid and sulfuric acid storage tank. It is immersed in strong corrosive medium for 5000 hours without damage and has stable sealing performance to avoid safety accidents caused by corrosive medium leakage;

-TC4 valve core is suitable for chemical reaction kettle feed ball valve. Under 350 ℃ high temperature and high pressure, the valve core is free of deformation and seal failure, ensuring accurate control of reaction kettle process.

3. ship and marine engineering: a "corrosion-resistant weapon" for the marine environment

In marine corrosive environment, titanium alloy valve core shows excellent adaptability:

-TA2 pure titanium valve core is used for the ball valve of seawater cooling system of ocean going ships to resist seawater and salt spray corrosion. The service life of valve core is the same as that of the ship, and the number of ship docking maintenance is reduced;

-TC4 valve core is suitable for the fluid control ball valve of deep-sea platform, which can withstand 300 meters of deep-sea pressure, and is resistant to seawater corrosion, ensuring the stable operation of oil and gas transportation and fire protection system of the platform.

4. nuclear power and general industry: accurate and reliable "control components"

-In the field of nuclear power: TC11 titanium alloy valve core is used in the ball valve of nuclear power auxiliary system, with excellent high temperature resistance and radiation corrosion resistance, stable operation under complex conditions, and ensuring the safety of nuclear power system;

-General industry: TA2 pure titanium valve core is used for fluid control ball valves in the food and pharmaceutical industries. It has excellent biocompatibility, no heavy metal pollution, and meets the food and medical safety standards.

4、 Quality assurance: whole process precise control system

1. special control of raw materials: adopt ≥ 99.8% high-purity sponge titanium, which is melted by vacuum consumable arc furnace for ≥ 3 times to ensure that the titanium ingot composition is uniform without segregation. Each batch of raw materials is attached with a composition analysis report, which can be traced to the source of the whole process;

2. precision forging process: the process of "numerical control fast forging+isothermal die forging" is adopted, and the forging ratio of the valve core is ≥ 5:1, ensuring that the internal structure of the valve core is compact, without defects such as porosity and porosity, and the density is ≥ 99.9%;

3. full inspection and verification: all valves have passed ultrasonic flaw detection (military grade I acceptance), sealing performance test (high pressure air tightness test), hardness test, corrosion resistance test, and additional fatigue and high temperature performance test for key nuclear/military valve cores;

4. sealing surface strengthening: it can provide grinding, polishing, coating and other sealing surface strengthening treatment to ensure the accuracy and wear resistance of valve core sealing surface and meet the sealing requirements of different working conditions.

Baoji Dingding titanium: the core supplier of titanium alloy ball valve core

The company is located in Baoji high tech Zone, the "China Titanium Valley". It has 2000 ton CNC fast forging machine, five axis machining center and other core equipment, with an annual production capacity of 800 tons, and has passed the ISO9001 quality management system. The products have served 100+customers such as leading petrochemical enterprises, shipbuilding groups, nuclear power research institutes, etc., and become the preferred partner of titanium alloy ball valve core.

Technical advantages: customized special-shaped valve core and processing ability of high-pressure sealing surface

Complete qualification: ISO9001

Service guarantee: customized ball valve adaptation scheme, 24-hour technical support

Scheme consultation: send ball valve type and working condition requirements to 530975155@qq.com Get the valve core adaptation scheme and quotation for free