Baoji Dingding titanium | marine hydraulic valve titanium alloy shell forgings corrosion resistant and pressure bearing core of marine hydraulic system

As the "protection and bearing center" of the hydraulic system, the ship hydraulic valve shell directly carries the high pressure of hydraulic oil, resists seawater corrosion and navigation impact, and its reliability determines the operation safety of key systems such as ship steering, windlass, and shipborne equipment. Baoji Dingding titanium products Co., Ltd. relies on the forging technology of "China Titanium Valley" and the experience of supporting ship equipment, focuses on the research and development of TC4, TC11, TA2 and other special brand shell forgings, strictly follows the national military standard GJB 2611a and CCS regulations of classification society, and realizes the shell wall thickness tolerance ≤± 0.3mm and pressure resistance up to 35MPa through the "integral forging+precision forming" process, which is perfectly suitable for the hydraulic systems of destroyers, frigates, ocean going freighters and other ships.

1、 Core advantage: performance and hard power exclusive to ship scene

Compared with traditional steel and copper alloy hydraulic valve housings, titanium alloy forgings have advantages in complex marine environment, and solve the three pain points of "corrosion leakage, impact deformation and frequent maintenance":

Marine grade corrosion resistance

The dense oxide film on the surface of titanium alloy can resist the triple erosion of seawater, salt spray and hydraulic oil emulsion. The corrosion rate of 5000 hours salt spray test is ≤ 0.0002mm/year, and the service life in the wet environment of ships is 12 times longer than that of steel shells, completely reducing the risk of corrosion and leakage.

High pressure impact resistance

The tensile strength of TC4 shell is ≥ 960mpa, the whole forging is free of weld defects, and it can withstand 35MPa hydraulic system pressure and navigation turbulence impact. The impact toughness is ≥ 50j/cm ², which is 80% higher than the impact resistance of copper alloy shell, avoiding shell cracking under high pressure.

Lightweight and integration

The density is only 4.51g/cm ³, which reduces the weight by 45% compared with the steel shell of the same specification and reduces the total load of the ship's hydraulic system; The forgings can be integrated into a complex oil circuit cavity, reducing the assembly interface, and improving the response speed of the hydraulic system by 15%.

Stability in wide temperature range

It has stable performance in the range of -50 ℃ (polar ships) to 400 ℃ (high temperature working condition of hydraulic oil), without low-temperature embrittlement and high-temperature creep. It adapts to extreme temperature changes during ocean voyage and ensures the stable operation of the hydraulic valve throughout the year.

2、 Special brand and customized specification for ships: accurate matching of hydraulic valve types

According to the characteristics of "high control accuracy and large difference in working conditions" of ship hydraulic valves, standardized and customized shell solutions are provided, covering the whole demand from micro control valves to large main valves:

3、 Core application scenario: coverage from military ships to civilian commercial ships

1. military ships: military grade hydraulic system support

The titanium alloy shell provides "zero fault" support for the military ship hydraulic system, and adapts to extreme combat and navigation requirements:

-TC11 shell is used for the main steering hydraulic valve of destroyer. Under the impact of 35MPa high pressure and naval gun firing vibration, the shell has no deformation and oil circuit has no leakage, ensuring the precise control of ship course;

-The non-magnetic TC4 shell is adapted to the hydraulic control valve of the nuclear submarine, which avoids the exposure of the magnetic field and improves the concealment. At the same time, it is resistant to deep-sea high pressure and seawater corrosion, and works stably at a depth of 300 meters.

2. civil Merchant Shipping: an economic choice with high efficiency and low consumption

According to the long-range requirements of ocean going cargo ships and passenger ships, titanium alloy shells achieve the goal of "low maintenance and high reliability":

-TA2 pure titanium shell is used for the hydraulic valve of windlass of 100000 DWT container ship. It has no corrosion loss within the service life of 5 years, reduces the maintenance times by 90% compared with the steel shell, and reduces the operation intensity of crew;

-TC4 lightweight shell can reduce the total weight of the hydraulic system of ocean going passenger ships by 45%, reduce the fuel consumption of ships, and save hundreds of thousands of yuan of operating costs per year.

3. special ship field: a sharp tool for adapting to extreme environment

In special ships such as scientific research ships and ice breakers, titanium alloy shells show excellent environmental adaptability:

-TC4 shell is used for the hydraulic valve of the polar scientific research ship. It has no risk of embrittlement at -50 ℃ and ensures the continuous output of thrust of the hydraulic system during ice breaking operation;

-The TA2 pure titanium shell is suitable for the seawater hydraulic valve of the marine survey ship, which is resistant to seawater corrosion and has no biological attachment, ensuring the stable operation of the hydraulic system of hydrological detection equipment.

4、 Ship level quality assurance: full process Military Industrialization control

1. military grade traceability of raw materials: using ≥ 99.8% high-purity sponge titanium, melting in vacuum consumable arc furnace ≥ 4 times, raw materials entering the plant need to pass the CCS composition test of classification society, and each batch can be traced to the origin of the mine;

2. customized forging process: it is equipped with a 2000 ton multi-directional fast forging machine and adopts the process of "high temperature blank cutting+low temperature precision forging". The forging ratio of the shell is ≥ 5:1 to ensure that the internal structure is compact and there are no loose defects in key parts such as valve holes and oil circuits;

3. special inspection of ships: all of them passed ultrasonic flaw detection (UT, military grade I), hydraulic explosion test (no leakage at 1.5 times the rated pressure), salt spray corrosion test, and the impact toughness and non-magnetic properties of military shells were verified additionally;

4. documented compliance assurance: each batch of shells is attached with a full set of documents of "material certificate+classification society certification report+flaw detection report+heat treatment record", which meets the traceability requirements of ship equipment in the whole life cycle.

Baoji Dingding titanium: core supplier of ship hydraulic valve shell

The company is located in Baoji high tech Zone, the "China Titanium Valley". It has three special production lines for titanium alloy forgings for ships, with an annual production capacity of 600 tons. It has passed the triple certification of the national military standard gjb9001c, Classification Society CCS and ISO9001, and is qualified for supporting military ship equipment. The products have served many domestic ship manufacturing enterprises and military research institutes, and become the preferred partner of titanium alloy shell for ship hydraulic system.

Technical advantages: integrated forming and non-magnetic processing ability of complex oil circuit shell

Complete qualifications: gjb9001c, CCS classification society, ISO9001 certification

Service support: ship hydraulic system adaptation, lifelong technical support

Scheme consultation: send hydraulic valve model and ship type to 530975155@qq.com Free access to the exclusive shell adaptation scheme