832 results about "Hard metal" patented technology

The present invention relates to a float collar apparatus for regulating the passage of fluid through a drilling / production liner or sub-sea casing. Apparatus of the present invention is fabricated using plastic flapper valves and valve-actuating sleeve components in contrast to prior art float collar components which are fabricated almost entirely of hard metals. Particularly, the plastic may be nylon, phenolic, or a phenolic-nylon laminate. The use of plastic components in the float collar apparatus of the present invention provides a substantial reduction in time and resources expended during drilling out of the float collar once cementing operations are completed. Additionally, the float collar apparatus of the present invention is fabricated from a pre-determined combination of plastic components and metal components thereby ensuring that the improved float collar can still endure substantial hydrostatic stresses encountered during casing liner running in and cementing operations.

A fuser and receiver release system and method are provided for improving the release of receivers in high speed of printing systems. This system controls the release of a receiver in conjunction with a fuser in a printing system, and specifically the efficiency and accuracy of the release system. One embodiment of this method includes a belt fuser that allows the separating of the heat transfer and release functions of the fuser such that fuser roller could be made of hard metal core that can be heated to high temperatures without the fear of delaminating elastomeric coatings which are common in roller fusing.

The invention relates to hard-coated bodies with a single- or multi-layer system containing at least one Ti1-xAlxN hard layer and a method for production thereof. The aim of the invention is to achieve a significantly improved wear resistance and oxidation resistance for such hard-coated bodies. Said hard-coated bodies are characterised in that the bodies are coated with at least one Ti1-xAlxN hard layer, generated by CVD without plasma stimulation present as a single-phase layer with cubic NaCl structure with a stoichiometric coefficient x>0.75 to x=0.93 and a lattice constant afcc between 0.412 nm and 0.405 nm, or as a multi-phase layer, the main phase being Ti1-xAlxN with a cubic NaCl structure with a stoichiometric coefficient x>0.75 to x=0.93 and a lattice constant afcc between 0.412 nm and 0.405 nm, with Ti1-xAlxN with a wurtzite structure and / or as TiNx with NaCl structure as further phase. Another feature of said hard layer is that the chlorine content is in the range of only 0.05 to 0.9 atom %. The invention further relates to a method for production of the body, characterised in that the body is coated in a reactor at temperatures from 700° C. to 900° C. by means of CVD without plasma stimulation with titanium halides, aluminium halides and reactive nitrogen compounds as precursors, mixed at elevated temperatures. Said coating can be applied to tools made from steel, hard metals, cermets and ceramics, such as drills, millers and indexable inserts.

Wafer level packaging process for packaging MEMS or other devices. In some embodiments, a MEMS wafer with normal thickness is firstly bonded to a cap wafer of normal thickness, followed by a thinning on the backside of the MEMS wafer. After this, the bonded wafer stack and the capping of the hermetically packaged MEMS devices are still rigid enough to do further processing. On this basis, through vias on the thinned substrate can be easily formed and stopped on the regions to be led out (e.g., metal pads / electrodes, highly doped silicon, etc.). Vias can be partially filled as this is the final surface of process. Even thick metal coated / patterned vias have much more space to relax possible thermal stress, as long as the vias are not completely filled with hard metal(s). Various embodiments are disclosed.

The invention relates to a tool comprising a substrate that consists of hard metal, cermet, ceramic, steel or high speed steel, and a multiple-ply coating that is applied using the PVD method and has a total thickness of 1 (mu)m to 20 (mu)m, said multiple-ply coating comprising a connecting layer and a wear-resistant layer deposited directly onto said connecting layer, characterised in that the connecting layer has a multiple-ply design and is deposited by means of cathodic vacuum arc vapour deposition (arc PVD), plies of said connecting layer which lie one immediately over the other having different compositions, and each of the multiple plies of said connecting layer being formed from carbides, nitrides, oxides, carbonitrides, oxycarbides, carboxy nitrides of at least two different metals selected from Ti, V, Cr, Zr, Nb, Mo, Ru, Hf, Ta, W, Al, Si, Y, Li and B, and solid solutions thereof; and said wear-resistant layer having a single or multiple-ply design and being deposited by means of high-power impulse magnetron sputtering (HIPIMS), each of said one or more plies of the wear-resistant layer being formed from carbides, nitrides, oxides, carbonitrides, oxycarbides, carboxy nitrides of at least two different metals selected from Ti, V, Cr, Zr, Nb, Mo, Ru, Hf, Ta, W, Al, Si, Y, Li and B and solid solutions thereof.