CN202925060U

CN202925060U - Novel ceramic roller device for silicon steel annealing furnace

Info

Publication number: CN202925060U
Application number: CN 201220606615
Authority: CN
Inventors: 张才富; 柯江军; 李德才
Original assignee: HUANGSHI SUNNY XINGYE STRIP CO Ltd
Current assignee: HUANGSHI SUNNY XINGYE STRIP CO Ltd
Priority date: 2012-11-16
Filing date: 2012-11-16
Publication date: 2013-05-08
Anticipated expiration: 2022-11-16

Abstract

The utility model relates to a novel ceramic roller device for a silicon steel annealing furnace. The novel ceramic roller device for the silicon steel annealing furnace comprises a roller core and a ceramic jacket; and the novel ceramic roller device for the silicon steel annealing furnace is characterized in that one six-claw flange is arranged at each of the two ends of the roller core; inner holes at the two ends of the ceramic jacket are processed into a hexagonal structure matched with the six-claw part of each six-claw flange, and the ceramic jacket is sheathed on the roller core and the six-claw parts of the six-claw flanges at the two ends; the roots of the six-claw flanges are fixedly arranged on the roller core; the six-claw flange is arranged on the roller core, and the problem that the ceramic jacket is cracked when being heated as thermal expansion coefficient of the traditional steel roller core is far higher than that of the ceramic jacket is well solved, so that the ceramic jacket can be tightly matched with six claws to realize stable transmission, the problem that the ceramic jacket is cracked as expansion is not uniform can be solved, the service life of a ceramic roller is greatly prolonged, production cost is saved, and product quality is improved.

Description

A kind of Novel silicon steel annealing furnace ceramic roller device

Technical field

The component that the utility model relates in metallurgical industry annealing process of silicon steel furnace apparatus improve, especially a kind of Novel silicon steel annealing furnace ceramic roller device.

Background technology

The silicon steel annealing furnace operation will be carried out high temperature decarburizing annealing to silicon steel sheet, be filled with a certain amount of steam in the decarburizing annealing section will be to stove, the steel plate decarburization also can produce corrosion simultaneously, the corrosion of surface of steel plate produces the iron of cavernous body after hydrogen reducing at reduction section, early application steel furnace roller, the iron of cavernous body at high temperature is easy to be attached to steel roller faces with the friction of steel furnace roller, after constantly piling up, the dirt settling of steel roller faces very easily forms obstinate knob, this knob can damage the silicon steel sheet surface, has reduced quality product; Used afterwards carbon cover roller to replace the steel roller, the furnace sow phenomenon is improved greatly, but because carbon cover roller surface is softer, the roller surface is easily by scratch of steel strip, scuffing place is easily iron powder accumulated and dross also, although the relative steel rider of carbon cover roller has delayed the dross cycle, carbon cover roller is short work-ing life, and production cost is very high; After 2000, begin to develop ceramic roller abroad, ceramic roller has advantages of steel rider and carbon cover roller, but because external import ceramic roller is expensive, domestic can't popularizing, after 2010, raising along with domestic ceramic roller shell manufacturing technology, existing ceramic roller is on probation at the silicon steel unit gradually, but because ceramic jacket and roller core coupling part design unreasonablely, does not have the thermal expansivity of fine solution steel roller core to be much higher than the thermal expansivity problem of ceramic jacket, in case be heated, cause the steel roller core that ceramic jacket is burst, ceramic jacket is short work-ing life, and production cost is high.

Summary of the invention

The purpose of this utility model will thoroughly solve existing ceramic roller shell exactly because of the crackly problem of unreasonable structure, and a kind of Novel silicon steel annealing furnace ceramic roller device of long service life is provided.

Concrete scheme of the present utility model is as follows: a kind of Novel silicon steel annealing furnace ceramic roller device, comprise roller core, ceramic jacket, and its improvements are, respectively are set with six pawl flanges at described roller core two ends; Described ceramic jacket two ends endoporus is processed into the hexagonal structure with six pawl flange six claw position couplings, and is sleeved on outside six claw positions of roller core and two end flanges thereof; The root of six pawl flanges is packed on roller core.

Described six pawl flange roots radially are fixed on roller core by bolt and nut.

Be running fit between six claw positions of described ceramic jacket and roller core, roller core and six pawl flanges; Roller core external diameter Φ wherein ₁Be 76mm, ceramic jacket internal diameter Φ ₂Be 78mm; Six pawl flange six claw portion external diameter Φ ₃For

Gap S between ceramic jacket outer face and six pawl flange root inner faces is 2mm.

the utility model is the silicon steel annealing furnace furnace roller, select special high temperature steel to make the steel rider core, the steel six pawl flanges that a high temperature steel is made respectively are installed at steel rider core two ends, the steel rider core is that running fit is to adapt to the different swell incremenies in high temperature lower shaft and hole from six pawl flanges, six pawl flanges and steel rider core are radially locked by thru-bolt, six claw positions of steel six pawl flanges are six flaps, under cold conditions, six pawl flanges and ceramic jacket are running fit, the discordance that expands due to material under hot, coordinating between six pawl flanges and ceramic jacket becomes wringing fit, but because six valvular structures of six pawl flanges have certain flexibility under hot, be unlikely to again when can guarantee steady transmission ceramic jacket is burst, come off for preventing that bolt and nut is in operation, after nut and bolt are fixing with outer end screw thread spot welding, deviate from order to prevent nut.Being arranged under normal temperature (scope-10 ℃-40 ℃) of furnace roller assembly carried out, top temperature during furnace roller work is 1000 ℃ of left and right, by the associated components structure is designed, the fine thermal expansivity that has solved steel material is much higher than the thermal expansivity of ceramic jacket, and the problem that causes ceramic jacket to break.

Can reach more than 1 year the work-ing life of the utility model ceramic roller after improving, and substantially reaches the standard of import like product.

Description of drawings

Fig. 1 is the utility model one-piece construction schematic diagram;

Fig. 2 is six pawl flange arrangement schematic diagram;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the structural representation of ceramic jacket;

Fig. 5 is the side-view of Fig. 4.

In figure: 1-roller core, 2-ceramic jacket, 3-six pawl flanges, 4-ceramic jacket two ends endoporus; 5-six pawl flange six claw positions, 6-six pawl flange roots, 7-bolt and nut.

Embodiment

A kind of Novel silicon steel annealing furnace ceramic roller device comprises roller core 1, ceramic jacket 2, respectively is set with six pawl flanges 3 at described roller core 1 two ends; Described ceramic jacket two ends endoporus 4 is processed into the hexagonal structure with six pawl flange six claw position 5 couplings, and is sleeved on outside six claw positions 5 of roller core 1 and two end flanges thereof; The root of six pawl flanges 3 is packed on roller core 1.

Described six pawl flange roots 6 radially are fixed on roller core by bolt and nut 7.

Be running fit between six claw positions 5 of described ceramic jacket 2 and roller core 1, roller core 1 and six pawl flanges 3; Roller core 1 external diameter Φ wherein ₁Be 76mm, ceramic jacket 2 internal diameter Φ ₂Be 78mm; Six pawl flange six claw portion 5 external diameter Φ ₃For

Gap S between ceramic jacket 2 outer faces and six pawl flange root 6 inner faces is 2mm.

Being produced as follows of roller core 1 in the present embodiment: roller core 1 is comprised of roller and spindle nose, directly be subjected to the roller that is of high-temperature part, roller material employing resistance toheat ZG40Cr25Ni20 material is preferably made, two spindle nose working temperatures are lower than roller, two spindle noses adopt the lower 1Cr18Ni9Ti of price, roller diameter Φ 76mm, size control is between Φ 75.9-Φ 76mm, bore the through hole of Φ 12mm on roller, be connected use as roller core 1 with six pawl flanges 3, hole dimension is controlled between Φ 12mm-Φ 12.1mm.

In the present embodiment, six pawl flanges 3 are produced as follows: six pawl flanges 3 are for directly being subjected to high-temperature part, and material adopts resistance toheat ZG40Cr25Ni20 preferably; Six pawl flanges 3 are divided into six pawl flange roots 6 and six pawl flange six claw positions 5, the root of external diameter Φ 152mm, the bolt and nut of being made by the Cr25Ni20 material of wearing M10 in hole by Φ 12mm is connected with roller core 1, six claw positions 5 are connected with ceramic jacket 2, its contact surface has certain gap, guarantee to fit tightly together with ceramic jacket 2 after six pawl expanded by heating, can prevent that again bulging force from crossing senior general's ceramic jacket 2 and bursting.

being produced as follows of ceramic jacket 2 in the present embodiment: ceramic jacket 2 for the very high stupalith die casting of density after and form through special process baking drying, ceramic jacket 2 blanks must be through just becoming finished product pottery roller shell after precision work, the expanded by heating amount of considering ceramic roller shell is very little, pottery roller shell endoporus and roller core 1 leave enough gaps, guarantee not contact with the roller shell inwall after roller core 1 expands, but ceramic roller shell two ends endoporus 4 is processed into interior hexagonal shape, size control after six pawl flange 3 expanded by heating can with the interior hexagon close contact of ceramic jacket 2, realize under the prerequisite of steady transmission, guarantee that ceramic roller shell is not burst, the inner face of pottery roller shell outer face and six pawl flange roots 6 leaves the gap of 2mm when designing, guarantee that six pawl flanges 3 can additionally not apply axial force to ceramic jacket 2 in process of expansion and contraction, has also guaranteed certain axial freedom of ceramic jacket 2.

Claims

1. a Novel silicon steel annealing furnace ceramic roller device, comprise roller core, ceramic jacket, it is characterized in that: respectively be set with six pawl flanges at described roller core two ends; Described ceramic jacket two ends endoporus is processed into the hexagonal structure with six pawl flange six claw position couplings, and is sleeved on outside six claw positions of roller core and two end flanges thereof; The root of six pawl flanges is packed on roller core.

2. a kind of Novel silicon steel annealing furnace ceramic roller device according to claim 1, it is characterized in that: described six pawl flange roots radially are fixed on roller core by bolt and nut.

3. a kind of Novel silicon steel annealing furnace ceramic roller device according to claim 1 is characterized in that: be running fit between six claw positions of described ceramic jacket and roller core, roller core and six pawl flanges; Roller core external diameter Φ wherein ₁Be 76mm, ceramic jacket internal diameter Φ ₂Be 78mm; Six pawl flange six claw portion external diameter Φ ₃For Gap S between ceramic jacket outer face and six pawl flange root inner faces is 2mm.