Choosing a titanium rod to avoid pitfalls: Master teaches you a few tricks to see through inferior products at a glance

Dear colleagues and friends, today we won't talk about anything empty, let's go straight to practical knowledge. Titanium rods are considered a fundamental and crucial raw material in our industry. The quality of products on the market varies greatly, and the prices are also far apart. How can we avoid falling into the pit and choose high-quality titanium rods with peace of mind? Based on my years of experience, I have summarized several "avoiding pitfalls" guidelines to ensure they are easy to understand.

1. Is the surface uneven? Be careful, it's the 'overworked' rolling mill that did it!

A low-quality titanium rod may have a bad complexion at first glance, with an uneven surface and even pockmarks or small pits visible. This is mostly due to the severe wear and tear of the rollers in the production plant, or the poor quality of the rollers themselves, which left these "work-related injury" marks on the surface of the titanium rod during rolling.

2. Are you covered in scratches? The disaster caused by the rudimentary equipment!

If you can feel obvious scratches with your hand, you need to be careful. Some informal manufacturers have relatively simple production equipment and are prone to burrs, which are like small knives, leaving marks on the surface of titanium rods. Don't underestimate these scratches, deep scratches can be like cracks on glass, greatly weakening the strength of the titanium rod itself.

3. Overall 'thin and weak' without energy? That's malnutrition and not enough pressure!

Poor quality titanium rods often give people a feeling of being "thin and small", with a very light texture, and the size may not meet the standard. Why is this happening? Because some manufacturers, in order to desperately pursue production, put too much pressure on the first few processes during rolling, resulting in insufficient momentum and pressure when it comes to the forming process, and the titanium rod material is not fully filled, naturally appearing as "malnutrition".

4. Surprise the appearance of "folded" scars? A fatal injury that breaks at one turn!

Folding "is a very dangerous defect on the surface of titanium rods, which looks like folds on clothes and often runs vertically. This is because some manufacturers make improper adjustments to the rolling mill rolls, resulting in excessive pressure (which can be understood as the force of rolling), causing the metal to be squeezed and "covered" during the rolling process. With this type of folded titanium rod, if you bend it lightly, the folded area may crack, and the strength is basically useless.

5. Do you have "pockmarks" on your face? Impurity of raw materials is the culprit!

If there are local, scar like defects on the surface of the titanium rod, it is likely that there is a problem with the raw material itself. For example, uneven raw material composition, high impurity content, and simple production equipment make it particularly easy to form such scars during the rolling process.

6. Surface cracking? The bubbles in the blank are the mole!

Small cracks can be seen on the surface of some titanium rods. This is usually caused by its' past life '- poor quality of raw materials. If there are many bubbles inside the billet, stress will be generated due to thermal expansion and contraction during the cooling process, which can easily "prop" itself out of internal injuries. After rolling, these internal injuries will be exposed as surface cracks.

7. Is the color wrong, like rusty iron? Temperature control is a science!

High quality titanium rods should have their unique metallic luster. If the color of the titanium rod you see is dark, even light red, or looks like pig iron without the luster that a metal should have, then the problem is big. There are two main reasons: first, the raw material itself is not qualified; The second issue is that the temperature during rolling did not meet the standard (possibly only estimated by naked eye), which is called "low-temperature rolling" and can cause the titanium rod to fail to achieve the desired performance.

8. Is the cross-section an ellipse? Unstable pressure, inaccurate size!

Take a final glance at the cross-section. The cross-section of a standard titanium rod should be very round. If the cross-section is clearly elliptical, it indicates that the pressure fluctuations in the first few lines during the rolling process are too large and the control is not precise. This is not just an unsightly issue, it will directly lead to a decrease in the strength of the titanium rod, and the thread size (if applicable) will definitely not meet the standard requirements.

If you need more information, contact stac@bjaok.com