30results about How to "Good deoxidizer" patented technology

The invention relates to a nickel base alloy welding wire. Alloy of the nickel base alloy welding wire comprises, by mass, 0.4%-0.45% of C, 1.0%-1.5% of Mn, 0.15%-1.2% of Si, 0.025% or less of P, 0.02% or less of S, 28%-30% of Cr, 49%-51% of Ni, 0.1% or less of Co, 0.1% or less of Mo, 0.1% or less of Ti, 0.1% or less of Al, 4.0%- 5% of W and the balance being Fe. A method for preparing the nickel base alloy welding wire includes the steps of alloy smelting, electroslag remelting, hot forging and blooming, hot rolling and annealing, acid pickling and coping, cold drawing and hydrogen withdrawing. A CaF2 slag system, an Al2O3 slag system and a CaO slag system are adopted in electroslag remelting. Through the method for preparing the nickel base alloy welding wire, the thin welding wire with the performance meeting requirements can be prepared, and the yield is high.

The invention relates to a method for preparing a nickel base alloy welding wire. The nickel base alloy comprises, by weight, 0.4%-0.45% of C, 1.0%-1.5% of Mn, 0.15%-1.2% of Si, 0%-0.025% of P, 0%-0.02% of S, 28%-30% of Cr, 49%-51% of Ni, 0%-0.1% of Co, 0%-0.1% of Mo, 0%-0.1% of Ti, 0%-0.1% of Al and 4.0%-5.0% of W, and the balance iron. The preparing method comprises the step of alloy smelting, electroslag remelting, hot forging cogging, hot rolling annealing, acid pickling, coping, cold drawing and hydrogen retreating, and a CaF2, Al2O3 and CaO slag system is adopted in the electroslag remelting. According to the method for preparing the nickel base alloy welding wire, the thin welding wire with the performance meeting the requirement can be obtained, and the yield is high.

Preparing silumin and Al-Si-Mn-Fe-Ti alloy with coal ash of high-alumina powder, relates to the technical sphere of non-ferro metals smelting. The steps of the invented process are: 1) deironing from coal ash of high-alumina powder, and breaking separately the bauxite chamotte and reducer boghead coal and oil coke; 2) batching and mixing them; 3) adding adhesive and water to the mixture, globularzing and drying; 4) sending the dried pellet to the stove and smelting in a high temperature to prepare primary alloy; 5) cleaning up of inclusion and gas in the primary alloy by refining and filtering it; 6) adding manganese to the refined alloy and deironing and filtering to prepare the Al-Si-Mn-Fe-Ti allay; 7) adding Al to the deironed and filtered alloy, diluting and casting ingot, to prepare silumin. The invention is characterized in that the investment is a little, the productive cycle is short, the energy consumption is low, and the quality of the alloy is nice.

The invention relates to a low-phosphorus and low-sulfur high-strength heat-resistant Cr35Ni45 nichrome welding wire and a preparation technology of the welding wire. The welding wire comprises, by mass, 0.35-0.45% of C, 1.20-1.60% of Si, 33.00-36.00% of Cr, 0.50-0.80% of Mn, 42.00-45.00% of Ni, 0.30-0.60% of Nb, 0.30-0.60% of Ti, 0.012%-0.014% of P, 0.007-0.009% of S, 0.25-0.30% of Al, 15.63-22.08% of Fe, and other unavoidable impurity elements. The preparation technology of the welding wire comprises the processes of vacuum smelting, homogenizing annealing, hot-forging cogging, multi-pass hot rolling, multi-pass cold drawing and finished product annealing. The welding wire has the good comprehensive mechanical property and well thermostable performance, the room temperature tensile strength of the welding wire is 1150-1250 MPa, and the room temperature percentage of elongation of the welding wire is 10-15%; and when the welding wire is tested at 1000 DEG C, the tensile strength is 600-700 MPa, and the elongation is greater than 25%.

The invention belongs to the field of welding materials, and particularly relates to a welding wire, in particular to a welding seam halogen-free ferrite stainless steel flux-cored wire and a preparation method thereof. The welding wire is composed of a welding core and a coating, the coating wraps the welding wire, and an adhesive is used for bonding the coating around the welding core; and the preparation method specifically comprises the following steps: (1) preparing the adhesive; (2) mixing and granulating; (3) mixing the coating; (4) preparing the welding core, and (5) painting the coating and the periphery of the welding wire and baking to obtain the welding wire. According to the welding seam halogen-free ferrite stainless steel flux-cored wire, the welding wire can form a compactprotective layer after stainless steel is clad, and the combination of oxygen and metal components in the alloy is prevented, so that the surface of a welding seam is still silver white, the oxidationresistance is excellent, and the surface of the welding seam does not need to be subjected to subsequent de-oxidation treatment; and the production process is simple, the cost is low, the efficiencyis high, and continuous and large-scale production can be realized.

The invention discloses E550-W100 ultrahigh-strength ship plate steel. The E550-W100 ultrahigh-strength ship plate steel comprises the following chemical components in percentage by mass: 0.04%-0.12%of C, 0.15%-0.35% of Si, 1.50%-1.70% of Mn, less than or equal to 0.020% of P, less than or equal to 0.0030% of S, 0.030%-0.060% of V, 0.010%-0.030% of Nb, 0.030%-0.080% of Alt, 0.005%-0.030% of Ti, 0.0005%-0.0040% of Ca and less than or equal to 0.0060% of N, wherein (Alt.N)/Ti is controlled to be 0.010 to 0.030. The yield strength of an obtained steel plate is larger than or equal to 550 MPa, the tensile strength of the steel plate is larger than or equal to 670 MPa, the steel plate is suitable for high-strength ship plate steel with the welding line energy within the range of 100 kJ/cm, andthe average impact energy of the HAZ of the steel plate at the temperature of -40 DEG C is 55 J or above.