Tire Tread Buffing Machine for Cold Retreading Process

Tire Buffing Machine
Description
The tyre's old tread is mechanically removed on high speed buffers.
Parameters
Suitable Tyre Sizes:650-1200(15,16''-20'',22.5'' &12.00-24'')
Buffing Head Speed:2980 r/min Powered by 11kw
Chuck wheel speed:42 r/min
Buffing Blade Models:R4-25
Total Power:16KW
External Dimensions(LWH):=1600×1800×2100 mm
Weight:1550kgs
Average buffing time: 3 mins
Optional function: Sidewall Buffer & Brusher device
Power
380V,50Hz,16KW
Remark
Optional expansion rim:15"-16",17.5"-19.5",20"-22.5",20"-22.5"(width:250mm),20"-22.5"(width:300mm),20"-22.5"(width:350mm)
  

Benefits of tyre retreading
      
The benefits of retreading are that it is both environmentally friendly and cost-efficient! When the tread has worn off, only about 20% of the tyre is used up. The carcass, which represents about 80% of the tyre's value, can be re-rubberized for a "new tyre life".
To produce a truck or bus tyre requires about 60-80 kg of rubber mixture. Retreading the tyre takes only about 15 kg of rubber. A considerable amount of raw materials can therefore be saved. In the EU, this equates to more than 300,000 tones per year!
To produce a car tyre requires about 28 litres of crude oil. To retread a car tyre, on the other hand, only 5.5 litres of oil are needed

The Melion Tyre Retreading Process includes:

Collection of Casings
Initial Inspection
Buffing
Section Repairs & Skiving
Cementing & Filling
Building - Tread Rubber
a. Enveloping & Rim Mounting or b. Double Envelope System
Curing by Chamber
Final Inspection & Painting



1. Collection of Casings
Worn tyres are collected to select suitable casings for tyre retread.

2. Initial Inspection
Each tyre received in a retread plant is subjected to a rigorous visual inspection. Inspectors are assisted by the use of non-destructive sophisticated MELION inspection machine.

3. Buffing After inspection
The tyre's old tread is mechanically removed on high speed buffers. MELION's buffers are extremely accurate and will remove the proper amount of old rubber while turning the tyre to an exact specified diameter and radius.

4. Section Repairs & Skiving
With advances in state-of-the-art repair materials and repair methods, many of these tyres can be routinely repaired and in most cases can be retreaded when the original tread is worn off. The repair station is where any surface injury is treated using effective material and tools for grinding and patching.

5. Cementing and Filling
Even in small injuries it is critical that the injury is cleaned and filled. If this is not done, severe rust, separation and steel cable looseness could take tyre out of service. The injury should be inspected, and then cleaned out with a carbide cutter. After cementing the injury, a vulcanizing rubber stem should be applied to "fill" the injury. This would create a permanent repair that maximizes tyre life.

With MELION designed-and-built spray booth, your cementing operation can be executed in a clean, efficient & environmentally responsible manner.

6. Building - Tread Rubber
In the pre-cure system, the tread rubber has already been vulcanized with the new tread pattern design. The buffed tyre needs a thin layer of cushion gum to be wrapped around its crown area. The pre-cured tread rubber is then applied with the building machine. This is called the building process.

7.a) Enveloping & Rim Mounting  
The built tyres are then mounted with envelops and rims to prepare them for curing.
   b) or Double Envelope System
For enveloping, tyres are first fitted an outer envelope at the envelope-mounting table before the inner envelope is fitted into them. The enveloped tyres are then vacuumed out for preparation prior to curing. Modern plants have their casings hoisted by monorail systems. With professional planning from MELION engineers, you can be assured of workstations designed to maximize output and ease workflow.

8. Curing by Chamber
The tyre is then placed in a curing chamber and the pre-cured tread becomes adhered to the tyre through a vulcanizing process.

Our wide engineering capabilities and experience enable MELION to build chambers to suit our clients' different preferences for size, steam heated, electric heated, or double heating system, semi-automatic and automatic chambers.

9. Final Inspection & Painting
The retreaded tyre is subjected to a final inspection. This inspection insures that only tyres that meet industry quality standards are allowed to leave the retread plant. All retreaded tyres are encouraged to be returned with the sidewalls painted using a light coat of black tyre paint.

The above is the whole process flow of MELION Tyre Retreading Equipment,should you have any question or inquiry regarding our products and company,please feel free to contact us.We promise to offer you our best service with best quality products.