Ceramic cutter head or stainless steel cutter head? There is something fishy in the advertisement for coffee grinder.

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Of all the coffee utensils and cooking methods, the editor thinks that the most important thing is the bean grinder, because the coffee is still the most fragrant. In the dazzling array of bean grinders on the market, some use ceramic cutters, while others are cast iron or stainless steel cutters. Is it better to have ceramic cutterhead or stainless steel cutter head? If manufacturers want to sell flowers and praise the fragrance of flowers, they will naturally avoid light and enlarge the advantages of their own bean grinder cutter. So, today, the editor will share the materials of these two kinds of cutters according to his own knowledge and experience. I hope everyone will not be easily led by the advertising copy.

The words advertised in common advertisements

Ceramic cutterhead is sharper than stainless steel → cutterhead material, is not the main factor to determine the sharpness. The design and production process determines whether it is sharp or not. In fact, the sharpest knife in the world is still a stainless steel knife. Because the ceramic cutterhead is almost all integrated molding, the plasticity of grinding after the mold is too low.

XX knife is more durable → ceramic is harder than stainless steel. Therefore, the ability of ceramic cutter head to resist wear and keep sharp is stronger than that of stainless steel. But while it is harder, ceramics are also brittle. In other words, in case of sticking, sticking, or falling, ceramics are more likely to be damaged than stainless steel. If you refer to the market of kitchen knives, ceramic knives are mainly distributed in the market of fruit knives and low-cost knives. So which is more "durable". Leave it to everyone to judge.

Ceramic cutterhead does not transmit / heat, will not affect the flavor of beans → first of all, the cutterhead will not heat without collision and friction with each other, the temperature of coffee powder will rise, and the heat comes from the friction between beans and the cutter head when the coffee beans are crushed by the cutterhead. The issue of heat will be discussed in more detail below.

Slow speed reduces calories and produces →. As mentioned above, heat is generated when the coffee bean itself is crushed, and it takes no less effort to grind it to the right fineness, whether fast or slow. Slow speed is just to prolong the time for heat generation. The slow speed increases the time that the powder stays on the cutter head, and the heat decreases, of course, but when the two factors are combined (time extension + heat reduction), the heat factor is not necessarily very different in the digital game.

Ceramic knife head can be washed, will not produce → yes, but grinding coffee beans, knife head basically does not need to be washed. Besides, the cutter head is made of ceramic and can be washed, but other parts are not necessarily as washable.

Heat problem

As mentioned above, heat is generated in the process of friction between the cutter head and the coffee beans. The sharper the knife, the less friction and the less heat. Therefore, the cutter head design and sharpness are the main factors to control heat production. The generation of heat is inevitable. To some extent, because the thermal conductivity of stainless steel is higher than that of ceramics, when the cold machine is grinded, the stainless steel cutter head will disperse the heat of friction more effectively than ceramics and lower the temperature of coffee powder. In the case of a home bean grinder, this is also a hidden advantage of the stainless steel cutter head. But how much heat it can lead away and how much it has an impact on flavor, today's space is endless.

Cost problem

Ceramic disc mold opening cost is high, so look around the high-end bean grinder, in the case of low output, ceramic cutter head only accounts for a very small number. But when we search for entry-level low-cost hand bean grinders, we will find that the market share of ceramic cutters below 100 yuan is frighteningly high. Although the cost of opening the mold is high, the cost of mass production is much lower than that of stainless steel. Therefore, under the inducement of mass production, the ceramic cutter head usually appears in the parity bean grinder.

For a bean grinder, the cutter head is the heart, but it also has to cooperate with other supporting designs, such as shaft design and access to beans, in order to determine the final powder quality. Therefore, do not simply take the material comparison of the cutter head as the most important determining factor.

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