In the manufacturing of clutch facings, the selection of appropriate materials for clutch facings friction materials is crucial. Calcium Carbonate Heavy has emerged as a notable component in clutch facings mixtures and mixes, bringing a set of characteristics that have both positive and negative implications for the final product.

Calcium Carbonate Heavy contributes to a stable coefficient of friction in clutch facings. Tests show that in a standard clutch operation simulation, clutch facings with Calcium Carbonate Heavy maintain a coefficient of friction within the range of 0.35 – 0.45 over 800 – 1000 engagement – disengagement cycles. In contrast, those without this additive may experience a fluctuation of up to 0.15 in the coefficient of friction after 500 – 600 cycles. This stability ensures smooth clutch operation and reliable power transfer.

It is a cost – effective option for clutch facings production. In large – scale manufacturing, the cost of Calcium Carbonate Heavy is approximately 40 – 50% lower than some high – end friction – enhancing additives. For example, if the cost of a specialized friction material is \(50 per kilogram, Calcium Carbonate Heavy can be sourced at around \)20 – $25 per kilogram. This significant cost – savings allows manufacturers to produce clutch facings at a more affordable price point without sacrificing too much on performance.

When added to the clutch facings mixture, Calcium Carbonate Heavy can enhance the wear resistance of the final product. Clutch facings with this additive have been found to reduce wear rate by about 20 – 30% compared to those without it. In a 100 – hour continuous wear test, the thickness loss of clutch facings with Calcium Carbonate Heavy was only 0.5 – 0.8 mm, while for those without, it was 0.7 – 1.2 mm. This longer lifespan can increase the durability and reliability of the clutch system.

One of the main drawbacks of Calcium Carbonate Heavy is its relatively low thermal conductivity. Clutches generate a substantial amount of heat during operation, and materials with low thermal conductivity struggle to dissipate this heat effectively. The thermal conductivity of Calcium Carbonate Heavy is about 0.5 – 1.0 W/(m·K), which is much lower than that of some high – performance thermal – conductive materials like copper (400 W/(m·K)). As a result, clutch facings with a high proportion of Calcium Carbonate Heavy may experience overheating during high – speed or high – load operations, leading to a reduction in friction performance and potentially shorter lifespan.

At high temperatures, typically above 250 – 300°C, Calcium Carbonate Heavy begins to decompose. This decomposition can cause a sudden change in the physical and chemical properties of the clutch facings. For example, in a high – temperature test where the clutch facings were heated to 350°C for 30 minutes, those with Calcium Carbonate Heavy showed a 15 – 20% decrease in friction coefficient and an increase in surface roughness, which can lead to inconsistent clutch operation.

There can be compatibility issues when mixing Calcium Carbonate Heavy with certain binders and other components in the clutch facings mixture. In some cases, it may not form a strong bond with the binder, resulting in a weaker overall structure. The shear strength of the clutch facings mixture with compatibility problems can be reduced by 15 – 20%, making the clutch facings more prone to delamination and failure under mechanical stress.

In conclusion, Calcium Carbonate Heavy offers advantages such as friction stability, cost – effectiveness, and improved wear resistance in clutch facings production. However, its limitations in thermal conductivity, high – temperature performance, and compatibility need to be carefully considered. Manufacturers must weigh these factors to determine the optimal use of Calcium Carbonate Heavy in clutch facings manufacturing.