Bean Grinder Casting Attentions

What should we notice in bean grinder casting? A bean grinder includes a benchtop millng machine, a bean grinder and so on. An excellent bean grinder needs excellent mechanical parameters such as proper match, higher tensible strength or good abrasion performance. What's more, the prevention of key faults in the casting is also very important for a bean grinder manufacturer. The following passage will introduce the preventing measures of casting excellent machines.

For a bean grinder manufacturer, the first key fault is the deformation in casting a bean grinder. If the sub rail of a bean grinder becomes deformed on the horizontal face or on the side face, here are two ways. The first measure is to apply prestrain method.The second is to do properly stretching at the part of casting with weak tensible strength according to its structure.

The second key fault is the core drift. What is the most important is to fix the rail core and upper core on the lower case with long bolt. If it is unable to realize the fixation, it is better to connect ever isolate sand lump by the outer force in order to counteract the crash of the buoyant force.

The third key fault is the loose tissue Usually, there are fine holes after processing the rail face of a bean grinder. Because it is the low temperature in melt liquid of iron and not all lead sheets are completely melt. Besides, much more carbon is added into the liquid. Here are three effective measures in the following.

1. Confirm the reasonable carbon equivalent for obtaining metallurgical structure with fine-flake lead according to the thickness of the bean grinder.

2. Add into the melted iron with a proper amount of alloying elements such as B or Mn.

3. Decrease the pouring temperature and fasten the cooling speed of the thick wall of the BEAN GRINDER in order to increase its degrees of superheat.

The fourth key fault is hard spots and a bad quenching effect. There are two main common reasons of forming hard...