Abstract:
The present invention relates to a method of making a cBN material comprising the steps of: -providing a powder mixture comprising cBN grains, aluminum and a Ti(C x N y O z ) a powder, -subjecting the powder mixture to a milling to form a powder blend, -subjecting the powder blend to a forming operation to form a green body, - subjecting said green body to a pre-sintering step, at a temperature between 650 to 950°C, to form a pre-sintered body, - subjecting said pre-sintered body to a HPHT operation to form the cBN material; where the Ti(C x N y O z ) a powder is stoichiometric so that 0.05 2 O 3 phase, a binder phase of TiC, TiN and/or TiCN, W and Co, whereby a quotient Q is
Abstract translation:本发明涉及一种制备cBN材料的方法,包括以下步骤: - 提供包含cBN晶粒,铝和Ti(C x N y O z)粉末的粉末混合物, - 将粉末混合物喷射至研磨以形成粉末混合物, - 将所述粉末混合物喷射到成型操作以形成生坯, - 在650至950℃之间的温度下对所述生坯进行预烧结步骤以形成预烧结体, - 对所述预烧结体进行处理, 烧结体进行HPHT操作以形成cBN材料; 其中Ti(C x N y O z)a粉末是化学计量的,使得0.05
Abstract:
The present invention relates to a cutting tool comprising a substrate and, a wear resistant coating, said wear resistant coating is composed of one or more layers of refractory compounds of which at least one layer consists of a multilayered MX/LX/MX/LX laminar structure where the alternating layers MX and LX are carbides or nitrides with the elements M and L selected from the group consisting of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, Al, Si or W and mixtures thereof, wherein the sequence of individual layer thicknesses has no repeat period but essentially aperiodic throughout the entire multilayered structure, and where the individual MX and LX layer thickness is larger than 0.1 ran but the sum of any 10 consecutive layers in the structure is smaller than 300 nm, and the total thickness of said multilayered structure is larger than 0.5 μm but smaller than 20.μm, deposited by PVD- technique, where at least one of MX or LX are electrically isolating, and a method of making such a cutting tool.
Abstract:
The present invention relates to a method of making a powder composition, which is suitable for production of a cBN composite material comprising cBN grains, a metallic binder phase and a ceramic binder phase. The method comprises a step of providing at least one ceramic binder phase forming powder in a milling device. Thereafter the at least one ceramic binder phase forming powder is subjected to a milling operation in the milling device to form a milled powder with 0.1 μm 50 ≤ 1.40 μm of the aluminium powder. The invention also relates to a method of making a cBN composite material.
Abstract:
The present invention relates to a cutting insert for turning in steel, stainless steel and heat resistant super alloys comprising a substrate and a coating. The insert has a rake face (1), a flank face (2), cutting edges (3) and a cutting corner (4). The cemented carbide substrate comprises WC, 8.5- 11.5 wt-% Co and 0.8-1.2 wt-% Cr with a coercivity of 19-23 kA/m and a CW_Cr-ratio of 0.80-0.97. The coating comprises an inner (A1, Ti) N- layer, with a thickness of 1-8 μm, and a composition of Al y Ti 1-y N, where y = 0.30-0.50, and a (AI, Cr) O- layer with a thickness of 0.2-1.5 μm and a composition of (Al x Cr I-X ) 2 O 3 , where x = 0.5-0.9. Inserts according to the invention has high resistance against crater and flank wear as well as improved cutting edge toughness without any loss of plastic deformation resistance. The invention also relates to a method of making the insert by using cathodic arc evaporation or magnetron sputtering. It also relates to the use of the insert for turning in steel, stainless steel and heat resistant super alloy.
Abstract translation:本发明涉及一种用于转动钢,不锈钢和耐热超合金的切削刀片,其包括基底和涂层。 插入件具有前刀面(1),侧面(2),切削刃(3)和切削角(4)。 硬质合金基体包括WC,8.5-11.5wt%Co和0.8-1.2wt%Cr,矫顽力为19-23kA / m,CW_Cr比为0.80-0.97。 该涂层包括厚度为1-8μm的内部(A1,Ti)N层,以及y = 0.30-0.50的AllyTi1-yN的组成和(AI,Cr)O层, 厚度为0.2-1.5μm,(Al x CrI-X)2 O 3的组成为x = 0.5〜0.9。 根据本发明的插入件具有高耐火山口和侧面磨损性,以及改进的切削刃韧性,而不损失塑性变形抗力。 本发明还涉及通过使用阴极电弧蒸发或磁控溅射制造插入件的方法。 它还涉及用于转动钢,不锈钢和耐热超合金的刀片的使用。
Abstract:
Method for manufacturing a metal cutting tool comprising depositing a hard and wear resistant refractory coating comprising compounds of which at least one layer consists of a multilayered MX/LX/MX/LX laminar structure where the alternating layers MX and LX are carbides or nitrides with the elements M and L selected from the group consisting of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, Al, Si or W and mixtures thereof, of which at least one of MX or LX are electrically isolating, and that the other layer(s) comprise(s) wear resistant nitrides, carbides, oxides and/or carbonitrides as known in the art, onto a substrate. Reactive Bipolar Pulsed Dual Magnetron Sputtering (BPDMS) technique using magnetron pairs comprising either one M element target and one L element target or using magnetron pairs with two targets of the same element, arranged so that one target in the magnetron pair acts as anode and the other target acts as cathode and vice versa are used for the deposition.
Abstract:
Method for manufacturing a metal cutting tool comprising depositing a hard and wear resistant refractory coating comprising compounds of which at least one layer consists of a multilayered MX/LX/MX/LX laminar structure where the alternating layers MX and LX are carbides or nitrides with the elements M and L selected from the group consisting of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, Al, Si or W and mixtures thereof, of which at least one of MX or LX are electrically isolating, and that the other layer(s) comprise(s) wear resistant nitrides, carbides, oxides and/or carbonitrides as known in the art, onto a substrate. Reactive Bipolar Pulsed Dual Magnetron Sputtering (BPDMS) technique using magnetron pairs comprising either one M element target and one L element target or using magnetron pairs with two targets of the same element, arranged so that one target in the magnetron pair acts as anode and the other target acts as cathode and vice versa are used for the deposition.
Abstract:
A cBN material and a method of making a cBN material, the method including the steps of providing a powder mixture comprising cBN grains, aluminum and a Ti(CxNyOz)a powder, subjecting the powder mixture to a milling to form a powder blend, subjecting the powder blend to a forming operation to form a green body, subjecting the green body to a pre-sintering step, at a temperature between 650 to 950° C., to form a pre-sintered body, and subjecting the pre-sintered body to a HPHT operation to form the cBN material. For the Ti(CxNyOz)a powder, 0.05≦̸z≦̸0.4. In addition, a cBN material includes cBN grains, an Al2O3 phase, a binder phase of TiC, TiN and/or TiCN, W and Co, whereby a quotient Q is
Abstract translation:一种cBN材料和一种制备cBN材料的方法,该方法包括以下步骤:提供包含cBN晶粒,铝和Ti(C x N y O z)粉末的粉末混合物,使粉末混合物经研磨以形成粉末混合物, 该粉末共混成形成生坯的成形操作,在650-950℃的温度下对生坯进行预烧结步骤,以形成预烧结体,并将预烧结体 到HPHT操作以形成cBN材料。 对于Ti(CxNyOz)粉末,0.05&amp; Zn; z&nlE; 0.4。 此外,cBN材料包括cBN晶粒,Al 2 O 3相,TiC,TiN和/或TiCN,W和Co的粘结相,其中商Q为cBN材料的<0.25。
Abstract:
A cBN material and a method of making a cBN material, the method including the steps of providing a powder mixture comprising cBN grains, aluminum and a Ti(CxNyOz)a powder, subjecting the powder mixture to a milling to form a powder blend, subjecting the powder blend to a forming operation to form a green body, subjecting the green body to a pre-sintering step, at a temperature between 650 to 950° C., to form a pre-sintered body, and subjecting the pre-sintered body to a HPHT operation to form the cBN material. For the Ti(CxNyOz)a powder, 0.05≦̸z≦̸0.4. In addition, a cBN material includes cBN grains, an Al2O3 phase, a binder phase of TiC, TiN and/or TiCN, W and Co, whereby a quotient Q is
Abstract:
The present invention describes a coated cutting tool for metal machining and a process for producing such tools. The coating is composed of one or more layers of refractory compounds of which at least one layer consists of nanocrystalline aluminum spinel of the type (Me)xAl2O3+x where Me is a second metal and 0
Abstract:
The present invention relates to a coated cutting tool (cemented carbide insert) useful for grooving or particularly parting of steel components such as steel or stainless steel tubes and bars. The insert is characterised by WC-Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a relatively thin coating including an inner layer of TiCxNyOz with columnar grains followed by a layer of fine grained λ-A12O3 and a top layer of TiN.