CN102184775A - Method for manufacturing iron-based amorphous iron core with height of more than 45 millimeters - Google Patents

Abstract

The invention relates to a method for manufacturing an iron-based amorphous iron core with the height of more than 45 millimeters. In the method, a broad band material is divided into two narrow materials, and the narrow materials are wound on the same die, so that the deviation of winding the iron core up and down is small, and the appearance quality of products can be effectively improved. Two iron cores are molded and annealed in the same tool die, so that the annealing contact surfaces of the iron cores are increased, the time difference of heat transfer is reduced, and the temperature uniformity of the iron cores is improved; and the stress of the annealed material can be relatively uniformly eliminated, so that the aims that the material is crystallized partially and part of atoms inside the material are arranged to form a nanometer structure are fulfilled, and the material has excellent soft magnetic performance.

Description

The manufacture method of highly Fe-based amorphous iron core more than a kind of 45mm

Technical field

The present invention relates to the manufacture method of highly Fe-based amorphous iron core more than a kind of 45mm.

Background technology

In present Fe-based amorphous CD type production producer, producing the above height of 45mm iron core all is to adopt a complete broadband coiling to form, then through overmolding, annealing, solidify, technologies such as cutting are made into CD sections core, there is the defective of following several respects in the CD sections core of Sheng Chaning like this: the coiling aspect, broadband material more than the 45mm is in present production technology level, the monolateral tolerance minimum of ubiquity is about 0.002mm, and general iron core all has more than 300 layers, if adopt the coiling of whole band, iron core minimum deflection 0.6mm up and down can appear, can produce the end face slit, though can be, but influence the quality of product through the process corrections of back, problem of appearance; The annealing aspect, because the iron core aspect ratio is higher, be the annealing of band mould, because of the defective of present amorphous industry annealing device temperature homogeneity and the conduction principle of heat transmission, it is too big that iron core core and appearance portion arrive the time difference of same temperature, be difficult to reach the consistency of temperature, so the iron core of whole band coiling is difficult to reach the requirement of annealing process index; The iron core cutting back that so makes 16KHZ@37mT loss (Ps) on electrical property can not be satisfied the average requirement at 1.37W/Kg of user 16KHZ@37mT loss (Ps) far away on average at 1.5W/Kg.

Summary of the invention

The technical problem to be solved in the present invention is, for solving coiling quality, outward appearance and the annealing that highly Fe-based amorphous iron core exists more than the 45mm that complete broadband coiling of present employing forms, the defective on the electrical property, adopt the manufacture method of highly Fe-based amorphous iron core more than a kind of novel 45mm, to achieve the above object.

Manufacture method of the present invention is as follows:

(1), the broadband material is cut into two piece of tape of same widths with the special-purpose slitting mill of non-crystaline amorphous metal, and two strip width additive values need to equal the total height of highly Fe-based amorphous iron core more than the 45mm of coiling;

(2), will as above divide two piece of tape that cut on circular die, to be wound into two identical circle ring iron cores;

(3), girth in outer perimeter and the above circle ring iron core is equated, highly equal two circle ring iron core height and square assembling die two circle ring iron cores of packing into, strut into simultaneously two circle ring iron cores rectangular-shaped, press clamping plate moulding after annealing in the iron core outside simultaneously, annealing way is the following 400 ℃ of steady temperatures of nitrogen protection 2 hours;

(4), the iron core that will as above move back fire soaks epoxy resin after laying down assembling die and clamping plate frock, the iron core product will be gone into again on the square assembling die, solidify oven dry after pressing the external form clamping plate, with epoxy resin that two parts are bonding firmly again, make it become whole back to cut into two C types with cutting blade;

(5), after product cutting finishes, grinding and cutting face on 400 order abrasive bands is dried aqueous vapor with product then, puts size and outward appearance in order;

(6), with the whole antirust processing of product, the finished product iron core.

The invention has the beneficial effects as follows: the broadband material is divided into two narrow materials, and isotype coiling makes on the coiling iron core lower deviation little, can effectively improve the product appearance quality.Two iron cores are annealed with the moulds of industrial equipment moulding, though middle cross section contacts, very big slit is still arranged after all, gas be easy to by, increased the annealing contact-making surface of iron core like this, reduce the time difference that heat is transmitted, improve the temperature homogeneity of iron core itself, annealing the material of finishing like this can be relatively uniformly except stress, and it is partially-crystallized that material reaches, the interior section atomic arrangement forms the purpose of nanostructure, and material has just possessed good soft magnet performance.

Embodiment

Manufacture method according to highly Fe-based amorphous iron core more than above-described a kind of 45mm, highly Fe-based amorphous iron core more than the 45mm that employing correlation method step is produced, reached goal of the invention fully, improved the product appearance quality, improved the technology validity of core annealing, product in 16KHZ@37mT loss (Ps) on average below 1.37W/Kg.

Claims (1)

1. the manufacture method of a highly Fe-based amorphous iron core more than the 45mm is characterized in that method step is as follows:

(1), the broadband material is cut into two piece of tape of same widths with the special-purpose slitting mill of non-crystaline amorphous metal, and two strip width additive values need to equal the total height of highly Fe-based amorphous iron core more than the 45mm of coiling;

(2), will as above divide two piece of tape that cut on circular die, to be wound into two identical circle ring iron cores;

(3), girth in outer perimeter and the above circle ring iron core is equated, highly equal two circle ring iron core height and square assembling die two circle ring iron cores of packing into, strut into simultaneously two circle ring iron cores rectangular-shaped, press clamping plate moulding after annealing in the iron core outside simultaneously, annealing way is the following 400 ℃ of steady temperatures of nitrogen protection 2 hours;

(4), the iron core that will as above move back fire soaks epoxy resin after laying down assembling die and clamping plate frock, the iron core product will be gone into again on the square assembling die, solidify oven dry after pressing the external form clamping plate, with epoxy resin that two parts are bonding firmly again, make it become whole back to cut into two C types with cutting blade;

(5), after product cutting finishes, grinding and cutting face on 400 order abrasive bands is dried aqueous vapor with product then, puts size and outward appearance in order;

(6), with the whole antirust processing of product, the finished product iron core.