Cobalt-based high elastic alloy, manufacture method thereof, ultra-thin strip made from the alloy and manufacture method thereof
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A manufacturing method and high-elasticity technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of difficult processing of ultra-thin strips, fragile edges and broken strips, and alloy cold working deformation resistance.
Inactive Publication Date: 2010-05-19
BAOSTEEL SPECIAL STEEL CO LTD
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On the basis of the existing high-elasticity CoNiCrMo alloy, by adding elements such as alloy strengthening, grain refinement and strengthening alloy structure, adopting vacuum smelting and vacuum self-consumption double vacuum smelting process to purify alloy structure and unique cold rolling process, etc. It has the technology to solve the technical problems such as high resistance to cold deformation of alloys, difficult processing of ultra-thin strips and fragile edge breaks, and difficulty in controlling the shape of the strips, and manufactures high-precision, high-performance cobalt-based strips with a thickness of 0.02-0.05mm±0.002mm. Elastic ultra-thin tape
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example 1
[0035] Example 1: Select high-quality metal raw materials such as Co, Cr, Ni, Fe, W, Mo, Nb, Zr, etc. to control the content of C, S, P, etc.; B is added in the form of Fe-B.
[0036] The alloy composition (%Wt, see No.6 in Table 2) is as follows: Co: 40.01, Ni: 16.05, Cr: 20.76, Mo: 3.61, W: 5.25, Si: 0.30, Mn: 2.02, Nb: 0.17, Zr : 0.5, B: 0.02, C: 0.079, S: 0.0019, P: 0.01, Yu: Fe;
[0037] The smelting uses a 25Kg vacuum furnace. After the main components are completely melted and refined for 20 minutes, elements such as Si, Mn, Nb, Zr, and B are added under the protection of Ar, and the steel is tapped and cast into two round bars of Φ55mm; Self-consumption into Φ80mm steel ingot; steel ingot peeled and hot forged into 30mm +5 ×90 +5 ×Lmm slab, after peeling, it is hot-rolled into a strip blank with a thickness of 3.5×90×Lmm; the strip blank is pickled and surface polished in a four-roll mill for cold rolling, and then cold-rolled multiple times on a two-roll or four-rol...
example 2
[0041] Example 2: Select high-quality metal raw materials such as Co, Cr, Ni, Fe, W, Mo, Nb, Zr, etc. to control the content of C, S, P, etc.; B is added in the form of Fe-B.
[0042] The alloy composition (%Wt see No.2 in Table 2) is as follows: Co: 39.8, Ni: 16.12, Cr: 20.32, Mo: 3.64, W: 4.73, Si: 0.36, Mn: 1.88, Nb: 0.12, Zr: 0.4, B: 0.02, C: 0.067, S: 0.0029, P<0.010, remainder: Fe;
[0043] The smelting uses a 25Kg vacuum furnace. After the main components are completely melted and refined for 20 minutes, elements such as Si, Mn, Nb, Zr, and B are added under the protection of Ar, and the steel is tapped and cast into two round bars of Φ55mm; Self-consumption into Φ80mm steel ingot; steel ingot peeled and hot forged into 30mm +5 ×90 +5 ×Lmm slab, after stripping, it is hot-rolled into a strip with a thickness of 3.5×90×L mm; the strip is pickled, surface polished, and cold-rolled on a four-roll mill, and then cold-rolled multiple times on a two-roll or four-roll mill ...
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Abstract
The invention provides a co-based high elastic alloy. The chemical components (by weight percentage) are as follows: Co, 38 to 42 percent; Ni, 14 to 17 percent; Cr, 18 to 22 percent; Mo, 3 to 7 percent; W, 4.0 to 6.5 percent; Si, less than 1.0 percent; Mn, less than 2.5 percent; Nb, less than 1.0 percent; Zr, less than or equal to 0.5 percent; B, less than 0.1 percent; C, less than 0.12 percent; S, less than 0.004 percent; P, less than 0.02 percent; the rest, Fe. The invention also provides a manufacturing method of the co-based high elastic alloy, namely, vacuum melting and vacuum consumabledouble-vacuum melting technology; wherein, the thickness of an ultrathin strip material of the co-based high elastic alloy which contains the components is 0.02 to 0.05mm. The manufacturing method forthe ultrathin strip material of the co-based high elastic alloy comprises the following steps: after cold rolling and blank material preparation as well as solution treatment, self-consumable ingotsare rolled coldly into thin strips by certain cold processing technique; the performance of the thin strips is improved by ageing heat treatment in reducing atmosphere or high vacuum; finally, the ultrathin strip material of the co-based high elastic alloy is obtained with the thickness of 0.05mm plus or minus 0.002mm, high accuracy and high performance. The ultrathin strip material of the co-based high elastic alloy made according to the invention not only has the advantage of good mechanical and physical property but also has the advantages of thin thickness, high accuracy and good consistency when processed into elastic elements.
Description
technical field [0001] The present invention relates to a high elastic alloy and its manufacturing method, a strip made of the alloy and its manufacturing method, specifically a cobalt-based high elastic alloy and its manufacturing method, a thin strip made of the alloy and its manufacturing method . Background technique [0002] Elastic alloys can be divided into two categories of general purpose and special purpose according to their uses. The elastic alloys involved in the present invention are metal functional materials with special mechanical and physical properties, and belong to high elastic alloys in the functional materials. They are widely used It is used to make elastic components in aerospace, precision machinery and precision instruments. High elastic alloys should have high elastic modulus, high tensile strength, high elastic limit, high hardness, and sometimes require corrosion resistance, high and low temperature resistance, non-magnetic, electrical conducti...
Claims
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