Tires are ring shaped elastic rubber products that are assembled on various vehicles or machinery and roll on the ground. It is usually installed on the metal rim, which can support the body, cushion the external impact, achieve contact with the road and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions. They bear various deformations, loads, forces, high and low temperatures when driving. Therefore, they must have high bearing capacity, traction performance and cushioning performance. At the same time, it is also required to have high wear resistance and flexibility, as well as low rolling resistance and heat generation. Half of the world’s rubber consumption is used in tire production, which shows the ability of tire to consume rubber.
This method should be kept in mind for advertisements with peculiar underarm odor and oily ears, whether inherited or acquired ×
People often hear about radial tires and bias tires. The meridian is 0 o’clock and 12 o’clock. The meridian is the longitude of the earth. The international code of radial tire is “R”, which is called radial tire in English; Radial tire, which is also called radial tire, X tire, steel wire tire, etc.
The first radial tire in the world was trial produced by Michelin of France in 1946. Its invention was a revolution in the tire industry and soon became the mainstream of the development of automobile tires.
Advertising Keren Power – Anti pollution flashover one-stop service provider post insulator ×
Tires are classified into diagonal tire and radial tire according to structural design. The fundamental difference between radial tire and diagonal tire is the carcass. The carcass of diagonal ply tire is the cord layer crossed by diagonal lines; The carcass of radial tire is made of polymer multi-layer cross material, and its top layer is made of several layers of steel belt cord fabric made of steel wire, which can reduce the probability of tire being punctured by foreign matters.
Animation demonstration: tire structure and manufacturing process
Speed comes from the tire manufacturing process!
1 Internal mixing process
Similar to the process of and face. The raw materials such as carbon black, natural/synthetic rubber, oil, additives and accelerants are mixed together and processed in an internal mixer to produce “rubber compound”. The composition of the compound depends on the performance of the tire, such as traction, driving performance, road conditions and the requirements of the tire itself.
2 Preparation of adhesive parts
Prepare all the semifinished rubber parts that make up the tire, which are divided into 6 main sections.
Animation demonstration: tire manufacturing process via Lassa (2 minutes and 30 seconds)
1. Extrusion:
The rubber material is fed into the extruder to extrude different semifinished rubber parts, such as tread, sidewall/bead and triangular rubber strip.
↓↓ It is similar to the noodle press ↓↓
2. Calendaring:
The raw material cord (mainly nylon and polyester) passes through the calendar, and a thin layer of rubber is hung on both sides of the cord. The final finished product is called
the cord fabric
3. Bead forming:
The tire bead is formed by winding many steel wires with glue. The rubber used for tire bead has special properties. After vulcanization, the rubber and steel wire can be closely bonded together.
4. Cord cutting:
In this process, the cord fabric will be cut to the applicable width and the joint will be connected. The change of cord width and angle mainly depends on the tire specification and the requirements of tire structure design.
5. Stick triangular adhesive tape:
In this process, the triangular rubber strip extruded by the extruder will be manually bonded to the bead. The triangular bead plays an important role in the handling performance of the tire.
6. Strap forming:
In the spindle room, many steel wires come out through the threading plate, and then pass through the mouth plate with the rubber material at the same time to make the steel wires hang glue on both sides. After gluing, the belt layer is cut to the specified angle and width. The width and angle size depend on the tire specification and structural design requirements. All rubber parts will be transported to the “tire molding” process for tire molding.
Tire production process
III
Tire forming
Assemble all semifinished products on the molding machine into raw tires (unvulcanized tires). After inspection, the raw tires are transported to the vulcanization process.
Tire production process IV: vulcanization
The raw tire is loaded on the curing press and vulcanized into a finished tire after proper time and conditions in the mold. The vulcanized tire has the appearance of the finished tire – pattern/font and tread pattern.
Tire production process V: final inspection
Tires can only be delivered to the finished product warehouse for shipment after visual appearance inspection, uniformity inspection, dynamic balance test and X-ray inspection
Tire production process VI: tire testing
In the process of designing new tire specifications, many tire tests must be carried out to ensure that the tire performance meets the requirements. After being officially put into production, the quality of tires will still be monitored by means of mileage test and other testing links.