Introduction to the Manufacturing Process of Titanium Flanges

The production and manufacturing technology of titanium plate welded flanges is a topic of much discussion. Many people have questions about titanium plate welded flanges, particularly the quality, which is often considered inferior to forged welded flanges. To address this, a professional titanium flange manufacturer has conducted research on the welding process and quality of titanium plate flanges. Gr3 Pure Titanium Foil / titanium alloy flange / ASTM F67 Gr2 Titanium Sheet

Firstly, regarding welding quality, our staff explains that the actual quality of titanium plate welded flanges is the same as that of forged welded flanges. However, during the entire manufacturing process, the raw materials for titanium plate welded flanges are rarely inspected. Therefore, titanium plate welded flange materials without systematic testing after production cannot meet quality standards. This is why the quality of titanium plate welded flanges sold on the market cannot compare with that of forged welded flanges.

So, what exactly is the welding method for titanium plate flanges?

Before welding, the machines and equipment must be inspected and adjusted to ensure their normal operation. Then, φ4.0J402 welding wire is prepared in advance. Ideally, it should be dried at 300℃-350℃ for one hour.

During welding, the conical flange and the large flange must be assembled according to the engineering drawings, and then the large flange is divided into eight equal parts. At this point, due to the flange thickness and large weld seam, careful attention must be paid to the welding; therefore, symmetrical and double-layer welding must be selected according to the cross-section.

After welding, the titanium flange must at least reach the compressive strength of the butt weld and the weld surface must be smooth and clean, without defects such as pores, weld beads, or weld leaks, and the misalignment must be less than 3mm. That is a standard flange.

Characteristics of Titanium Pipes

(I) Corrosion Resistance

Performance in Chemical Environments

Titanium pipes exhibit excellent corrosion resistance to most organic acids, inorganic acids, alkalis, and salt solutions. For example, in environments containing chloride ions, such as seawater, titanium pipes demonstrate significantly better corrosion resistance than stainless steel. This is because titanium forms a stable, protective oxide film on its surface, preventing further reaction between the medium and the titanium substrate. In marine environments, titanium pipes can be used in seawater desalination plants, ship cooling systems, etc., effectively resisting seawater erosion and greatly extending the service life of equipment.

Corrosion Resistance in Different Industrial Media

In the chemical industry, titanium pipes can withstand corrosion from highly corrosive acids such as sulfuric acid, hydrochloric acid, and nitric acid. Even with nitric acid concentrations up to 80%, titanium pipes maintain good corrosion resistance at room temperature. In the paper industry, pulp contains various chemical substances; titanium pipes can be used in pulp transport pipelines to resist corrosive components such as sulfides, ensuring long-term stable pipeline operation. Thin Wall Titanium Condenser Tubes / Titanium Capillary Tube / titanium threaded tube

(II) Excellent Mechanical Properties

High Strength-to-Weight Ratio

Titanium tubes possess high strength, with tensile strength ranging from 430 to 1400 MPa, while maintaining a relatively low density of approximately 4.5 g/cm³, only about 60% of that of steel. This makes titanium tubes widely used in the aerospace field. For example, in aircraft hydraulic systems, using titanium tubes can significantly reduce the overall weight of the aircraft while ensuring system strength requirements, thereby reducing fuel consumption and improving flight performance.

Good Toughness and Fatigue Resistance

Titanium tubes exhibit excellent toughness, capable of withstanding large deformations without brittle fracture. Under cyclic loading conditions, such as in heat exchanger pipes in petrochemical plants, titanium tubes demonstrate good fatigue resistance. They can operate for extended periods in environments with frequent temperature changes and pressure fluctuations without easily developing fatigue cracks, thus ensuring the reliability and safety of the equipment.

(IV) High Temperature Resistance

Stability in High-Temperature Environments

Titanium tubes exhibit good thermal stability within a certain temperature range. Pure titanium has a melting point as high as 1668℃, and titanium tubes retain a certain level of strength and toughness even at high temperatures. In certain components of aero engines, such as the cooling channels for compressor blades, titanium tubes can withstand high operating temperatures while maintaining structural integrity, thereby helping to improve engine efficiency and reliability.

What factors need to be considered when selecting the diameter of a titanium rod?

Titanium rods, as a high-performance material, are widely used in many fields, such as chemical engineering and aerospace. In these applications, its diameter is a critical parameter, directly affecting the performance, service life, and applicability of the titanium rod.

When selecting the diameter of a titanium rod, the following factors need to be considered:

1. Working load: Select an appropriate diameter based on the magnitude of the working load to ensure the titanium rod can withstand and operate stably.  6al4v titanium bar / Grade 12 Titanium Rod / Grade 2 Titanium Round Bar

2. Working environment: Consider the impact of environmental factors such as temperature and corrosion on the titanium rod, and select a suitable diameter to ensure its stability and durability under harsh conditions.

3. Size limitations: In some applications, size limitations are a critical factor. An appropriate diameter needs to be selected based on specific size requirements to ensure the titanium rod can fit and perform optimally.