How is the widely used titanium wire processed and produced?
Titanium is characterized by light weight, high strength, metallic luster, and good corrosion resistance. Due to its stable chemical properties, it has good resistance to high temperature, low temperature, strong acid and strong alkali, and has the characteristics of high strength and low density. It is called "space metal", "smart metal", "biological metal" and "universal metal".
Titanium wire classification: titanium alloy wire, pure titanium glasses wire, titanium straight wire, pure titanium wire, titanium welding wire, titanium hanging wire, titanium coiled wire, titanium bright wire, medical titanium wire, titanium-nickel alloy wire.
Titanium wire specifications:
Titanium wire specifications: φ0.8-φ6.0mm
Titanium wire specifications for glasses: φ1.0-φ6.0mm special titanium wire
Titanium wire specifications: φ0.2-φ8.0mm for hanging clamps
The primary purposes of titanium wire include: welding wire, creation of springs, bolts, and so on. widely used in petrochemical, pharmaceutical, aviation, navigation, and other fields.
1.Welding wire. Over 80% of titanium and titanium alloy wires are currently utilized as welding wires. For instance, welding of different titanium gear and welded pipes, fix welding of aeronautics stream motor turbine plates and cutting edges, welding of housings, and so on.
2. Since titanium has magnificent erosion obstruction, it is generally utilized in substance, drug, papermaking and different businesses. For instance, Tianjin Chemical Plant makes filters with 3.2mm pure titanium wire.
3. Wires made of titanium and titanium alloy are used to make things like springs, load-bearing parts, fasteners, and so on. because of their great in general properties. For instance, Xi'an High Tension Valve Processing plant utilizes TC4 wire to fabricate valve pressure springs.
4. In the medical and health industry, titanium and titanium alloy wires are used to manufacture medical devices and are implanted into the human body for dental crown fixation, skull fixation, etc.
5. Some titanium amalgams are utilized to make satellite radio wires and shoulder braces for garments because of their shape memory capability.
6. Titanium and titanium alloy wires are used to make a variety of electrodes in the water treatment and electroplating industries.
Titanium wire and titanium combination wire drawing is a metal plastic handling innovation that pulls the wire bar or wire clear from the kick the bucket opening of the wire drawing bite the dust under the activity of attracting power to create little segment titanium and titanium composite wire. . Wire poles of various cross-sectional shapes and sizes of different metals and compounds can delivered by draw. The drawn wire has exact aspects and smooth surface. The drawing apparatus and mold utilized are straightforward and simple to manufacture. While drawing super fine metal wire with a wire measurement under 0.05mm, penetrating the mold is troublesome. The safety factor K value can be greater than 2.0 to increase drawing production efficiency, decrease the number of breaks and mold penetrations, and increase drawing process stability.
Drawing above the recrystallization temperature is hot drawing, drawing above room temperature and below the recrystallization temperature is warm drawing. Cold drawing is the most commonly used drawing method in metal wire and wire production. When hot drawing, the wire must be heated before entering the die hole. Mainly used for drawing wires of high melting point metals such as tungsten and molybdenum. During warm drawing, the metal wire also needs to be heated to a specified temperature range by a heater before it can enter the die hole for drawing. Mainly used for drawing zinc wire, high-speed steel wire, bearing steel wire and other difficult-to-deform alloy wires.
Depending on the number of wires passing through the molds at the same time during the drawing process, drawing that passes through only one mold is single-pass drawing, and drawing that passes through several (2 to 25) dies in sequence is multi-pass drawing. By continuous drawing. The line speed of single-pass drawing is low, and the productivity and labor productivity are low. It is often used to draw large wire diameter, low plasticity and special-shaped wires. Multi-pass drawing has high line speed, high degree of mechanization and automation, and high productivity and labor productivity. It is the main method of metal wire and wire production. It is divided into non-sliding continuous stretching and sliding continuous stretching.
Depending on the state of the lubricant used during wire drawing, liquid lubricant is used for wet wire drawing and solid lubricant is used for dry wire drawing.
There are also special drawings, such as roller mold drawings, etc.
Process characteristics: The stress state of metal wire drawing is a three-dimensional principal stress state of two-dimensional compressive stress and one tensile stress. Compared with the principal stress state of compressive stress in three directions, the drawn wire can achieve plasticity more easily. deformed state.
The pull-out deformation state is a three-dimensional main deformation state of compression deformation in two directions and tensile deformation in one direction. This state is not conducive to the plasticity of metal materials and is more likely to produce and expose surface defects. The amount of deformation in each pass during the metal drawing process is limited by its safety factor. The smaller the deformation, the greater the number of drawings. Therefore, multi-pass continuous high-speed drawing is often used in metal wire production.
Common problems and solutions for metal wire drawing
In metal processing, external force is used to force carbon steel, stainless steel, aluminum, copper and other metals through a mold to compress their cross-section into the required shape and size. This is our common drawing process. The wire drawing process is divided into dry wire drawing and wet wire drawing according to the equipment and lubricants used. This article briefly introduces common problems and solutions in wet stretching.
First of all, the choice of wet wire drawing process is generally for metal wire drawing with small diameter, special requirements for surface finish or subsequent processing technology. The main categories of wet pulling lubricants include pure oil, synthetic oil, lotion, paste, etc. The selection of wet drawing lubricants is mainly based on many factors such as raw material material, mold, surface quality, and downstream applications. For example, for commonly used stainless steel drawing, pure oil with higher viscosity and special extreme pressure additives are generally used. For carbon steel, emulsion is generally used. For non-ferrous metals, pure oils, synthetic oils or emulsions can be selected depending on the end application requirements. If you have special requirements, you can also choose ointment.
Generally speaking, in actual operation, various problems will occur in both dry and wet drawing processes. Let's take a look at common problems when pulling wet and their corresponding solutions.
1. Discoloration of wires
Surface discoloration of wires (such as copper materials) is mainly oxidative discoloration, which is caused by improper temperature and humidity conditions. It may be that the emulsion concentration is too low or the temperature is abnormal; there is too much oil attached to the wire; the water quality is substandard; foreign oil is mixed in, etc.
Once you find out the cause of its discoloration, you can take appropriate solutions based on the actual situation. For example, if the emulsion concentration is too low, increase it to the normal standard; if the temperature is abnormal, adjust it to the normal 35°C~45°C; check whether there is drawing oil overflowing at the outlet; remove foreign oil mixed in the emulsion, etc.
2. Mold wear is large
The reasons for large die loss are firstly improper machine operation and secondly incorrect lubricant selection. If the machine is not operating properly, the operator needs to practice continuously and check its working condition before each operation.
3. Broken wires, scratches, burrs
Broken wires, scratches, and burrs greatly affect the appearance and quality of the product. These problems may be caused by metal swarf contamination caused by insufficient lubrication, clogged mold holes, or aging lubricants that lead to direct metal-to-mold contact. Through the filtering equipment, metal shavings can be removed, blockages can be removed, and lubrication can be replaced. Take agency measures respectively to solve the problem.
4. Emulsion layering/excessive surface precipitation
Microbial invasion, too low pH value, too high water hardness and inorganic salts, too high emulsion temperature, etc. may cause emulsion delamination or excessive precipitation on the surface of the wire. Solutions must also be targeted.
If it is a microbial attack, you can add bactericide and supplement sodium hydroxide solution or triethylamine alcohol; if the pH value is too low, you need to supplement sodium hydroxide solution or triethylamine alcohol; when preparing water, the hardness and inorganic content of the water should be used. Salt content. When the temperature is too high, the prepared water needs to be replaced; when the emulsion temperature is too high, it needs to be properly cooled before use.
