Metallurgical brakes are based on this design concept. The friction required for water-cooled brakes should mainly come from the friction between polymers, rather than the direct friction between the metal dual surface and the friction material. The friction of polymers can be seen as two parts: the adhesion component and the deformation component. The adhesion component is the frictional resistance generated by the adhesion between polymers, which is easy to understand, The frictional deformation component of polymer materials refers to the strain that occurs in the surface material during elastic or viscoelastic contact, and positive work is done on the friction system. After unloading, some of the energy released is consumed in the form of vibration energy and thermal energy. Pneumatic brake usage diagram
For friction material products with copper as a friction dual component, metallurgical brakes need to design a new formula system to achieve this. The new formula system should not contain metal materials and hard friction enhancers, but should use more organic polymer materials, including fibers and particles as reinforcement materials, matrix binders, and friction performance regulators. However, for high-temperature working conditions above 250 ℃, such formula systems are not recommended, Due to the poor heat resistance of organic compounds, the friction and wear performance will be reduced under the action of frictional heat
The Metallurgical Crane Brake Zone provides us with metallurgical crane brakes, metallurgical crane safety brakes, metallurgical crane safety brakes, metallurgical crane lifting low-speed brakes, and other contents. The content about metallurgical crane brakes is comprehensive, and various models of specialized brakes for the metallurgical industry have a long service life to choose from. It is an information integration platform for the construction machinery industry, With the development of modern industrial machinery, brakes have emerged many new structural types, among which caliper disc brakes, magnetic powder brakes and electromagnetic brakes are widely used. The specific classification of various disc drum brakes is as follows:
Friction brake can be divided into disc brake, external block brake, internal expansion shoe brake, belt brake, integrated belt brake, double shoe brake, multi shoe brake, simple belt brake, single disc brake, multi disc brake, fixed caliper brake, floating brake, etc. Non friction brake, which can be divided into magnetic powder brake, magnetic eddy current brake, water eddy current brake, etc.
In particular, under high load, it has good heat resistance, stable braking effect, and is not afraid of mud and water. When driving in winter and under bad road conditions, many cars use flat brake discs, perforated brake discs, and scoring brake discs. Among them, scoring brake discs have good braking effect and ventilation and heat dissipation capacity.
The diameter of the brake disc and the diameter D of the brake disc of the metallurgical brake should be as large as possible. At this time, the Galaxy effective radius of the brake disc is increased, which can reduce the clamping force of the brake caliper, and reduce the unit pressure and working temperature of the pad. The diameter of the brake disc is usually chosen to be 70% to 79% of the rim diameter, depending on the rim diameter. Vehicles with a total mass greater than 2 tons should have an upper limit.
Z-Z9 series brake
The thickness of the brake disc has an impact on the quality of the brake disc and the temperature rise during operation. To reduce the mass, the thickness of the brake disc should not be too large; In order to reduce temperature, the thickness of the brake disc should not be too small. The brake disc can be made solid, or a ventilation hole can be cast in the middle of the brake disc for heat dissipation and ventilation. When designing friction materials, apart from graphite and metal sulfides that serve as solid lubricants and have thermal conductivity, no metals, metal oxides, or metal salt inorganic substances are added. Instead, they rely on the weight of the polymer, whether they are fibers and particles used as reinforcement materials, matrix binders, or friction performance modifiers. These materials will not cause furrows or scratches on copper pairs, The organic matter is easy to transfer to the metal dual surface to form a transfer film to protect the dual surface. For example, the cashew nut shell oil friction powder we are familiar with has this effect. It is hoped that the friction will occur between the transfer film on the copper dual surface and the facial mask on the friction material surface.