Metal bonded wheel

Tougher metal-bonded wheels exhibit poor dressing ability therefore, efficient and stable grinding will be difficult to achieve simultaneously. 

Straight metal-bonded wheels were used in the high-MRR experiments. The specifications of the wheels are as follows ... 

Ohmori, H. and Nakagawa, T., "Analysis of Mirror Surface Generation of Hard and Brittle Materials by ELID (Electrolytic In-Process Dressing) Grinding with Superfine Grain Metallic Bond Wheels," Annals of CIRP, Vol. 41, No. 1, 1995, pp. 287-290. 

Precision truing of metal-bonded wheels to the required shape by ED truing... 

Good groimd surface roughness can be obtained using the 4000 metal-bonded wheel in microfabrication grinding. 

The ELID essential elements include a metal-bonded grinding wheel, electrolytic power source, and electrolytic coolant. The most important feature is that no special machine is required. The metal-bonded wheel is connected to the positive terminal of a power supply with a smooth brush contact, and a fixed electrode is made negative. The grinding wheel is dressed because of the electrolysis phenomenon that occurs upon the supply of a suitable grinding fluid and an electric current. 

The concept of ECG was introduced by McGeough (1974). The electrolyt-ically conductive metal-bonded wheel is the anode and a fixed graphite stick is the cathode. The dressing process is an electrolytic phenomenon. Wlech et al. (1993) employed this principle but they used sodimn chloride solution as the electrolyte, which is harmful for machine tools. 

Grinding with metal-bonded wheels finer than JK 10,000... 

Factorial experiments of DSG of alumina ceramics with diamond were carried out in the experimental conditions listed in Table 12.1. Before each experiment, the wheels were dressed to a completely restored cutting ability according to the bond type the vitrified bond wheel was dressed mechanically with silicon carbide superfine dressing sticks, whereas the metal bond wheel was predressed using an electrolytic in-process dressing (ELID) technique. 

Wheels with a thickness of approximately 0.8-2 mm are used to ensure the stability of machines operating at high speeds. Thinner wheels with a thickness of about 0.2-0.6 mm can be used for low-speed machines. An ordinary dressing stone can be used to help restore the cutting effectiveness of used, metal-bonded wheels. Lubricants are used in sectioning to protect against corrosion and to improve cutting quality. 

Metal bonded wheels are made nearly exclusively with diamond for very severe applications where high mechanical strength is required. Electroplated cubic boron nitride products are also finding applications, especially of very difficult to grind and very hard steels. 

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