The cutting method of a honeycomb formed body includes an end face cutting step of cutting both end faces of the ceramic honeycomb formed body before fired, by use of blade type rough-cutting grinding wheels in which coarse abrasive grain layers are formed; a honeycomb formed body rotating step of rotating the honeycomb formed body round a rotation axis which is a central axis perpendicular to the end faces of the honeycomb formed body; and an end face finishing step of disposing two finish-polishing grinding wheels via a predetermined distance so that finishing abrasive grain layers formed in the finish-polishing grinding wheels face each other, rotating the finish-polishing grinding wheels round a rotary shaft which is a central shaft of the finish-polishing grinding wheels, and moving the honeycomb formed body to pass the honeycomb formed body between the two finish-polishing grinding wheels, thereby finish-polishing cut surfaces which are cut.

A glass-ceramic article includes at least one substrate, such as a plate, made of glass-ceramic, the substrate having a face including a microtexturing such that the arithmetic mean surface roughness Ra, measured according to standard ISO 4287, is between 0.14 and 0.40 μm, and the total roughness, Rt, measured according to standard ISO 4287, is between 1.15 and 5.00 μm.

This invention discloses a green environment-friendly removing device for porcelain glaze based on defective enamels, including a main body, a reaction cavity with an upward opening formed in the main body and a supporting plate slidably arranged between the inner walls in the reaction cavity, and an enamel residual product can be placed on the supporting plate, and a porcelain glaze removing mechanism capable of enabling the enamel residual defective product to generate chemical reaction and remove the porcelain glaze is arranged in the reaction cavity, has a very optimized reworking effect; does not need a mechanical reworking process and does not need to worry about the pollution environment, so that the porcelain glaze removal process of the whole enamel defective product is simple and trouble-saving; some wastes generated after processing can be collected and utilized, and all generated waste liquid wastes can reach emission standard and green and environment-friendly.

The cutting method of a honeycomb formed body includes an end face cutting step of cutting both end faces of the ceramic honeycomb formed body before fired, by use of blade type rough-cutting grinding wheels in which coarse abrasive grain layers are formed; a honeycomb formed body rotating step of rotating the honeycomb formed body round a rotation axis which is a central axis perpendicular to the end faces of the honeycomb formed body; and an end face finishing step of disposing two finish-polishing grinding wheels via a predetermined distance so that finishing abrasive grain layers formed in the finish-polishing grinding wheels face each other, rotating the finish-polishing grinding wheels round a rotary shaft which is a central shaft of the finish-polishing grinding wheels, and moving the honeycomb formed body to pass the honeycomb formed body between the two finish-polishing grinding wheels, thereby finish-polishing cut surfaces which are cut.

A vertical mill machine may be configured to facilitate a process of grinding a thread into a work piece. In one example, the method includes securing a fixture onto a planar surface of a vertical mill machine, the fixture being rotatable. The method further includes securing a work piece to the fixture and rotating the work piece about a Y-axis. The method yet further includes positioning a milling axle configured to move about an X-Y-Z-axis adjacent a circumferential surface of the work piece, wherein the milling axle includes a tool and wherein the tool is configured to rotate about the Y-axis. The method further includes rotating the tool about the Y-axis and contacting the tool with the circumferential surface of an exposed end of the work piece. The method yet further includes grinding a thread into the work piece with the tool.