The rubber bump for minecart is an elastic rubber part installed at both ends of the minecart body, which plays the role of buffering collision prevention, isolation, and reducing the impact force of collision, protecting the minecart and equipment, and avoiding damage caused by rigid collision. Tire reclaimed rubber has the basic performance characteristics of rubber, high strength, good elasticity, wear resistance, flexural resistance, used in the production of rubber for mining trucks can effectively reduce production costs under the premise of ensuring the use effect.
1. Tire reclaimed rubber production of rubber for mining trucks vulcanization formula
100 parts of tire reclaimed rubber, 10 parts of waste insulating tape glue, 80 parts of waste rubber plate glue, 20 parts of waste medical bottle stopper glue, 2 parts of zinc oxide, 1 part of stearic acid, 14 parts of carbon black N774, 10 parts of heavy calcium carbonate, 6 parts of pine tar, 0.5 parts of accelerator M, 1 part of accelerator TMTD, 6.5 parts of sulfur; A total of 251 copies. Physical properties of vulcanized rubber: hardness is about 70 degrees, tensile strength is about 4MPa, elasticity is about 30%.
2. Performance requirements for rubber bumps for mining trucks
(1) The rubber bump for mining trucks requires the rubber material to have good elasticity, which can give the rubber bump a good anti-collision function and effectively absorb the collision energy.
(2) The rubber material is required to have a certain tear resistance to prevent the edge from tearing and falling off when the minecart collides.
(3) The rubber material used for the rubber meeting of the minecart needs to have appropriate hardness, which has sufficient strength and rigidity to withstand the collision force and impact force of the minecart, and will not fail due to excessive deformation due to too softness; It is also necessary to avoid being too hard and losing elasticity and not being able to play a cushioning role.
(4) The working environment of the minecart is complex, and the rubber bump will rub against the track and other minecart parts in long-term use, so the rubber material is required to have good wear resistance to resist wear, prolong the service life of the rubber bump, and reduce the frequency of replacement and maintenance costs.
3. Key points of the design of the rubber meeting formula for the production of tire reclaimed rubber for mining trucks
When using tire reclaimed rubber to produce rubber for mining trucks, the sulfur-accelerator system is used more, the accelerator M/TMTD can be used together to accelerate the vulcanization speed, and the appropriate use of accelerator DM can improve the E4LYY1112 of vulcanization flatness and reduce the risk of sulfurization. The use of carbon black N330, N550 and other reinforcing agents can effectively improve the mechanical strength and wear resistance of rubber joints. Rubber softeners can improve the processing performance of rubber compounds and the flexibility of rubber joints, and the commonly used ones are pine tar, paraffin oil, etc.
Using tire reclaimed rubber as the main raw material to produce rubber for mining trucks not only requires the selection of appropriate tire reclaimed rubber and reasonable design of rubber formula, but also requires strict control of production process parameters, such as mixing temperature, mixing time, vulcanization temperature, vulcanization time, etc., and discuss relevant issues with you in the future.
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