CN205133676U - Nanocrystalline magnetic ring heat treatment furnace - Google Patents

Abstract

The utility model relates to a nanocrystalline magnetic ring heat treatment furnace, including furnace body, stopper, intake pipe, outlet duct and hanging the stick, the furnace body both ends set up intake pipe and outlet duct respectively to all being equipped with the stopper, hanging the stick in the furnace body, its characterized in that, heating wire twines on smelter body outer wall, and the heating wire divide into in the solid matter at both ends district and middle all rows district, and the heating wire of all arranging the district is arranged evenly, and the heating wire in solid matter district is more intensive than the heating wire range of all arranging the district. The utility model discloses a heating wire is at the solid matter in both ends solid matter district and all arrange the align to grid in district at the interlude, and can reaching the heating wire, all to arrange the furnace temperature in district even, and the difference in temperature is 5 DEG C of scopes, and temperature homogeneity is very good to simple structure, with low costs.

Description

Nanocrystalline core heat treatment furnace

Technical field

The utility model relates to metallic substance technical field of heat treatment equipment, particularly a kind of Nanocrystalline core heat treatment furnace.

Background technology

The thermal treatment temp of Nanocrystalline core generally at about 500 DEG C, warm process in genus.Nanocrystalline core equipment for Heating Processing requires that in-furnace temperature is even, require in industry batch production the difference of each point temperature in stove be not more than ± 10 DEG C, simultaneously also will by the shielding gas (nitrogen or argon gas) of certain flow in stove.In order to reach this requirement, general meeting is carried out segmentation to body of heater and is added gentle temperature control, to ensure the even of furnace body temperature.Such as: the tube furnace temperature control district that keep a section 1 meter long, if only use one section of heated for controlling temperature, the temperature of stove will in the middle of high, two ends are low.If improve temperature uniformity, a method is exactly multistage temperature control.Multistage temperature control is exactly the region of temperature control will be divided into several sections, every section of heating separately, separately temperature control.If every section of temperature control congruence, the temperature homogeneity of whole body of heater will be improved greatly.The effect and the segmentation that improve number relevant with the temperature-controlled precision of temperature controlling instruments.When temperature controlling instruments temperature-controlled precision is identical, segmentation is more, and temperature uniformity is better.But multistage temperature control also has its shortcoming: one, multistage temperature control can make heat treatment furnace cost be multiplied, segmentation is more, cost is higher, and such as three sections of stoves can regard three cover heating units in fact as, temperature controlling instruments heats a body of heater, and cost nature is higher than single hop stove a lot; Its two, the temperature control between multi-stage oven section and section can interact, thus affects the life-span of temperature controlling instruments, and such as, during heating, three sections can not be arrived temperature simultaneously, and the section arriving first temperature can affect heating and the control of other sections, and single hop stove would not have this problem.But; single hop stove then there will be the phenomenon that body of heater medium temperature is high, two ends temperature is low; and; owing to will being constantly filled with and discharging shielding gas; the temperature of inlet end also can be lower than outlet side; temperature in whole like this body of heater will be uneven, and the distribution situation of furnace temperature refers to Fig. 4, do not reach the temperature control requirement of Nanocrystalline core thermal treatment target temperature ± 10 DEG C.

Summary of the invention

In order to solve existing Nanocrystalline core equipment for Heating Processing single hop stove and multi-stage oven Problems existing, the utility model proposes a kind of Nanocrystalline core heat treatment furnace, improving the temperature uniformity of process stove with simple structure, cheap cost.

To achieve these goals, the utility model provides a kind of Nanocrystalline core heat treatment furnace, comprise body of heater, stopper, inlet pipe, escape pipe and hanger rod, body of heater two ends arrange inlet pipe and escape pipe respectively, and are equipped with stopper, hanger rod is in body of heater, it is characterized in that, heating wire winding is on furnace body outer wall, and nichrome wire is divided in the solid matter district at two ends and middle Jun Pai district, evenly, the nichrome wire in solid matter district is than the nichrome wire dense arrangement in Jun Pai district in the nichrome wire arrangement in Jun Pai district.

The utility model is by nichrome wire at the solid matter in solid matter district, two ends and evenly distributed in interlude Jun Pai district, and the furnace temperature that can reach nichrome wire Jun Pai district is even, and the temperature difference is ± 5 DEG C of scopes, and temperature homogeneity is very good, and structure is simple, cost is low.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model Nanocrystalline core heat treatment furnace;

Fig. 2 is the sectional view of the utility model Nanocrystalline core heat treatment furnace;

Fig. 3 is the furnace figure of the utility model Nanocrystalline core heat treatment furnace;

Fig. 4 is the furnace figure of existing single hop stove.

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment

See Fig. 1 and Fig. 2, Nanocrystalline core heat treatment furnace comprises body of heater 1, stopper 2, inlet pipe 31, escape pipe 32 and hanger rod 4, and body of heater 1 is the stainless steel tube of both ends open, and two stoppers 2 are separately positioned on the two ends of body of heater 1, is blocked by the opening at body of heater 1 two ends.The material of stopper 2 can be rubber or silica gel etc.Inlet pipe 31 is inserted on the stopper 2 of body of heater 1 one end, inside and outside respectively at body of heater 1 of its two ends; Escape pipe 32 is inserted on the stopper 2 of body of heater 1 the other end, and inside and outside respectively at body of heater 1 of its two ends, is uninterruptedly filled with in stove and discharges shielding gas nitrogen.Four hanger rods 4 are in body of heater 1, and the two ends of hanger rod 4 are inserted on the stopper 2 at body of heater 1 two ends, and hanger rod 4 is used for Nanocrystalline core in tandem, and can adopt resistant to elevated temperatures copper rod, also can be resistant to elevated temperatures other materials.Thermopair 5 one end is outside body of heater 1, and the other end, in the inside in body of heater 1 cardinal principle mid-way, is used for measuring the temperature in body of heater.

Can use single hop temperature control to reach, can reach again the uniform object of furnace temperature, the utility model is wound around nichrome wire 6 on the outer wall of body of heater 1.See Fig. 1, nichrome wire 6 is divided into the Jun Pai district B of solid matter district A1, A2 at two ends and centre, evenly, the nichrome wire of solid matter district A1, A2, than the nichrome wire dense arrangement of Jun Pai district B, improves the temperature at two ends, furnace insulation district by the solid matter of two ends nichrome wire in the nichrome wire arrangement of Jun Pai district B.Along the axis of body of heater 1, the length ratio of solid matter district A1, Jun Pai district B and solid matter district A2 is 3 ~ 10: 100: 3 ~ 10, is adjusted the temperature at two ends, furnace insulation district and center by the length ratio adjusting solid matter district and Jun Pai district, makes both trends evenly.In view of the phenomenon that body of heater medium temperature is high, two ends temperature is low appears in single hop temperature control furnace; and owing to will being constantly filled with and discharging shielding gas; the temperature of inlet end also can be lower than outlet side; the utility model is greater than near the length of the solid matter district A1 of inlet pipe 31 or equals the length of the solid matter district A2 near escape pipe 32, can also be balanced the temperature difference of inlet end and outlet side by the slight adjustment of solid matter district, two ends coil turn.In the present embodiment, along body of heater axially, the length ratio of solid matter district A1, Jun Pai district B and solid matter district A2 is 5: 100: 5, the temperature that can reach furnace insulation district within the scope of target temperature ± 5 DEG C, higher than DEG C temperature control requirement of nanocrystalline heat treated target temperature ± 10.On the furnace figure of Fig. 4, can see that the temperature of solid matter district A1, Jun Pai district B and solid matter district A2 is almost a sea line, the temperature difference in stove inside holding district is very little.

Nichrome wire 6 overcoat has insulation layer, and to insulate with stainless steel body of heater, in the present embodiment, insulation layer is insulation porcelain ring.On body of heater 1 is wound around after nichrome wire 6, then wrap up thermal insulation layer in the outside of body of heater 1 and nichrome wire 6, to strengthen furnace insulation, in the present embodiment, the material of thermal insulation layer is asbestos.

The utility model drops into actual production at present, result of use is good, according to market Inquiry, take every six bodies of heater as a combination stove cost of a group, significantly reduce more than 50% than the multistage temperature control stove cost with output, fully confirm feasibility of the present utility model, economy and practicality.

Claims (6)

1. Nanocrystalline core heat treatment furnace, comprise body of heater, stopper, inlet pipe, escape pipe and hanger rod, body of heater two ends arrange inlet pipe and escape pipe respectively, and being equipped with stopper, hanger rod, in body of heater, is characterized in that, heating wire winding is on furnace body outer wall, nichrome wire is divided in the solid matter district at two ends and middle Jun Pai district, and evenly, the nichrome wire in solid matter district is than the nichrome wire dense arrangement in Jun Pai district in the nichrome wire arrangement in Jun Pai district.

2. Nanocrystalline core heat treatment furnace according to claim 1, is characterized in that, along body of heater axially, the length ratio in described solid matter district, Jun Pai district and solid matter district is 3 ~ 10: 100: 3 ~ 10.

3. Nanocrystalline core heat treatment furnace according to claim 2, is characterized in that, the length near the solid matter district of inlet pipe is greater than or equals the length in the solid matter district near escape pipe.

4. Nanocrystalline core heat treatment furnace according to claim 3, is characterized in that, along body of heater axially, the length ratio in described solid matter district, Jun Pai district and solid matter district is 5: 100: 5.

5. Nanocrystalline core heat treatment furnace according to claim 4, is characterized in that, nichrome wire overcoat has insulation layer.

6. Nanocrystalline core heat treatment furnace according to claim 5, is characterized in that, on body of heater is wound around after nichrome wire, then wraps up thermal insulation layer in the outside of body of heater and nichrome wire.