CN2075205U

CN2075205U - Low-temp. tempering heat treating furnace for cutter soldering

Info

Publication number: CN2075205U
Application number: CN 90221874
Authority: CN
Inventors: 袁军
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-16
Filing date: 1990-10-16
Publication date: 1991-04-17

Abstract

The utility model relates to a low-temp. tempering heat treating furnace for cutter soldering. The existing low-temp. tempering furnace for cutters is brickkiln type electrically heated furnaces or the electrically heated furnaces with automatic temperature control systems, which has the defects of large investment, large occupation, complicated apparatus, hard maintenance, inconvenience, and high energy consumption. The utility model can also accomplish temperature control and constant temperature without an expensive electric automation temperature control system; thus, the utility model has the advantages of few investment, low cost, little energy consumption, high efficiency, easy manufacture, convenience, and agility, and the utility model is a new device which is applicable for general factories, mechanical processing industry, and rural industry.

Description

Low-temp. tempering heat treating furnace for cutter soldering

The present invention relates to the heat treatment furnace that industrial production mechanical processing industry inserted tool is produced, particularly compact simplified heat treatment furnace.

Current inserted tool is produced heat-treating methods two kinds, first kind of insulation slow cooling method, carbide chip soldering (abbreviation workpiece) on cutter hub is inserted in exsiccant lime or the wooden carbon dust groove afterwards, the heat insulation slow cooling that cutter hub absorbs when utilizing soldering, this method adopts more general, and advantage is that equipment is simple, and shortcoming is that temperature is uncontrollable, be subjected to again all kinds of factor affecting big (as the size of cutter hub volume and caloric receptivity, thermal insulation medium kind and humidity; The cutter postwelding is shelved time and envrionment temperature or the like), it can not eliminate the unrelieved stress of carbide filler postwelding completely effectively, limited the optimised process performance when cutter is on active service, quality is also stable inadequately, in addition, wooden carbon dust or lime powder are sticking easily to be sticked on the workpiece, and each operation all needs thermal insulation medium is dried, operation is trouble, and labor condition is poor.

Second method is the low-temperaturetempering method: workpiece is packed into from building in the electrical heater of special-purpose stove or automatization temperature control, under suitable temperature, carrying out the constant temperature low-temperaturetempering in the regular hour scope handles, its advantage is the requirement that is applicable to that cutter in enormous quantities is produced, satisfy cutter and produced the process of thermal treatment requirement, it combines the insulation slow cooling of workpiece and low-temperaturetempering carries out, the cutter quality is improved, workpiece quality is stable, shortcoming is that investment is big, floor space (or factory building) is big, equipment is complicated, the energy consumption height, dumb, maintenance difficult etc., present for this reason most industrial enterprise, the cutter that township-run factory uses is still based on outsourcing, the utility model is exactly the weak point of producing thermal processing equipment at existing inserted tool, a kind of less investment of design and manufacture, cost is low, but temperature control efficient height, energy consumption is low, flexible multi-functional low-temperature tempering heat treatment stove, this stove can be used as the loft drier of low hydrogen type electrode, also can be used as holding furnace, use such as thermostat container and baking box, because being mainly, the purpose of design adapts to the requirement of inserted tool treatment production, so be called cutter soldering low-temperature tempering heat treatment stove, the operation logic of this stove is, utilize the balance realization thermostatic control that offsets of the heat of individual layer electric heater group produces in the stove heat and the loss of body of heater natural heat dissipation to exempt expensive automatic electrical control system, reached special-purpose furnace treatment reason cutter, insulation slow cooling and low-temperaturetempering merge the same effect of carrying out, satisfied the processing requirement of cutter soldering low-temperaturetempering, obviously improve with insulation slow cooling method comparison cutter quality, this stove is general industrial enterprise, the blanket a kind of new installation of township industry, have no matter this stove makes cutter by oneself or the sale cutter all can obtain higher benefit, more remarkable in conjunction with the result of use of ratio-frequency welding equipment.

The utility model is achieved in that with the mild steel plate to be to add in the double-deck casing interlayer manufactured of raw material to fill thermal insulation medium as body of heater, stove is interior by loading onto down two-layer electric heater group, furnace roof is established a heat indicator, when giving the heat intensification two-layer electricradiator group is all connected, when thermometer is indicated to required furnace temperature, turn off upper strata electricradiator group when needing constant temperature, keep temperature in the stove (at this moment body of heater heat dissipation capacity or the heat that makes caloric receptivity and electricradiator group provide offset balance) realization heat-preserving constant-temperature purpose with the heat of lower floor's electricradiator group work, this stove characteristic: temperature rise is fast in the stove, convenient temperature control, temperature-stable between the flat-temperature zone, energy utilization rate height, energy consumption is low, because do not have expensive automatization electric control system, so cost is low, fault is few, simple to operate, easy care, cutter are gone into stove amount big (with equal energy consumption, furnace volume relatively) stable and reliable operation, 4 wheels are housed under the stove, and conveniently moving is flexible.

Below in conjunction with accompanying drawing the utility model is described in detail:

Fig. 1 is the positive main synoptic diagram of looking of the utility model

Fig. 2 is the utility model diagrammatic cross-section

(1) is body of heater among Fig. 1-2, and (2) are fire doors, and (3) are to move wheel; (4) be fixed armrest; (5) be outer case (stove skin), (6) are internal box (interior stove skins), and (7) are thermal insulation mediums; (8) be upper strata electric heater group; (9) be lower floor's electric heater group, (10) are thermowell, and (11) are heat indicators; (12) be thermometer stationary installation and protective sleeve, (13) are movable knife-carriers.

Of the present utility model is that the equidistant suit of outer case (5) and internal box (6) is formed body of heater (1) by the dress manufacture; in body of heater (1) interlayer, add and fill thermal insulation medium (7); in internal box (6) by loading onto layer electric heater group (8) and lower floor's electric heater group (9); heat indicator (11) is set in body of heater (1) the tip temperature meter sleeve pipe (10); with the fixing protection of fixing protector (12), in the internal box (6) movable knife-carrier (13) can be set and load onto fire door (2) return pulley (3) and fixed armrest (4).

Usage of the present utility model is that workpiece (cutter) is packed on the interior knife-carrier of body of heater (1) (13), close upper furnace door (2) give heat when heating up power connection up and down two-layer electricradiator group (8) (9) be indicated to required furnace temperature when heat indicator (11), turn off upper strata electric heater group (8), utilize the work capacity of lower floor's electric heater group (9) to keep temperature realization thermostatic control in the stove, after constant temperature time arrives, turn off lower floor's electric heater group power supply and reach insulation tempering purpose (after turning off lower floor's electric heater group (9), temperature still can keep 1 hour in the stove, therefore can shift to an earlier date 1 hour powered-down) still can realize function of temperature control by the two-layer electric heater group in logical (8) (9) once more if need to heat up.Utilize the mobile wheel (3) and the fixed armrest (4) of body of heater (1) bottom device to make the body of heater conveniently moving flexible.

The utility model cost is low, easily manufactures, but temperature control, energy consumption is low, and the efficient height is convenient, flexible.

Claims

A kind of simple and easy low-temperaturetempering stove, form by body of heater and interior dress electric heater, it is characterized in that in internal box (6), power supply is all connected when loading onto down two-layer electric heater group (8) (9) (or multilayer electric heater group) and heat up, turning off upper strata electric heater group (8) (turn off during multilayer electric heater group wherein which floor) during thermostatic control utilizes the work capacity of lower floor's electric heater group (or utilize remaining which floor electric heater group energy) to keep temperature in the stove, realize thermostatic control, do not have automatization or semi-automatic temperature controlling system that expensive electrical element is formed.