CN203408987U

CN203408987U - Insulation device for rolled magnesium alloy conveying roller table

Info

Publication number: CN203408987U
Application number: CN201320241111.2U
Authority: CN
Inventors: 李昕涛; 黄庆学; 冯晓鹏; 黄志权; 袁东磊
Original assignee: Taiyuan University of Science and Technology
Current assignee: Taiyuan University of Science and Technology
Priority date: 2013-05-07
Filing date: 2013-05-07
Publication date: 2014-01-29
Anticipated expiration: 2023-05-07

Abstract

The utility model relates to an insulation device for a rolled magnesium alloy conveying roller table and belongs to the technical field of a conveying roller table of a rolling mill. The insulation device is characterized in that each of front and rear roller table sets of the rolling mill is respectively provided with a roller table insulation box in which a temperature sensor and a pressure sensor are arranged; a hot air preparation box in which a temperature sensor and a pressure sensor are arranged is respectively arranged outside each insulation box; the hot air preparation boxes convey prepared hot air into the roller table insulation boxes by pipelines to carry out heat preservation on a magnesium board and simultaneously, the cooled hot air is recovered into the hot air preparation boxes to be circularly heated in the insulation boxes; and the hot air preparation boxes are also connected with an air supplementing pipeline, so that fresh air enters the hot air preparation boxes through a dry filter and a blower. The insulation device has the advantages that a rolled part is subjected to heat preservation by the roller table insulation boxes; the temperature of the magnesium board can be effectively guaranteed not to be influenced by cold and hot variation of the outside in the rolling process; and generation of cracks and reduction of mechanical property are avoided.

Description

A kind of attemperator of rolling magnesium alloy rollgang

Technical field

The utility model belongs to milling train rollgang technical field, is specifically related to a kind of attemperator of rolling magnesium alloy rollgang.

Background technology

At present, adopting the production process of rolling magnesium sheet material material is both at home and abroad by rollgang, to send the magnesium slab of heating to milling train to be rolled, in this course of conveying, magnesium slab is in the process that is out input into milling train by heating furnace and in the process of back and forth rolling, be subject to the impact of cool ambient air, the outer field temperature of magnesium slab can change, exospheric temperature and middle temperature all can produce the temperature difference up and down, to cause the magnesium sheet material both sides of the edge after rolling can produce inhomogeneous crackle, but also can cause magnesium plate edge stress uneven, affect the mechanical property of magnesium sheet material.For obtaining qualified magnesium sheet material, often the magnesium sheet material after rolling is peelled off to the part that appearance has crackle by machined, only get mid portion application, this will cause very large waste.

Summary of the invention

The purpose of this utility model is to provide a kind of attemperator of rollgang, can effectively overcome the shortcoming that prior art exists.

The utility model object is to realize like this, as Fig. 1, shown in 2, it is that roller-way incubator 1 and 1 ＇ that pressure sensor and temperature sensor are housed in its case has been installed respectively in the rollgang group of milling train 14 front and back, the roller-way incubator on milling train right side of now take is example: the hot-air that temperature sensor 11 and pressure sensor 10 are housed in the outside of this roller-way incubator 1 is provided with a case is prepared case 9, this hot-air is prepared case 9 and is connected with the bottom of roller-way incubator 1 by being equipped with the hot air delivery pipe road 12 of high temperature flow speed control valve 13 on it, simultaneously, hot-air is prepared case 9 and also by the hot-air recovery channel 3 of air blast 5 and filter 4 is installed above it, is connected with the interior rollgang upside of roller-way incubator 1, hot-air is prepared case 9 and also by air blast 8 and filter 7, is connected with the tonifying Qi pipeline 6 for supplementary air.Hot-air recovery channel 3 and tonifying Qi pipeline 6 are prepared case 9 junctions with hot-air respectively check valve 27,27 ＇ are all installed.Fig. 3 is the transverse sectional view of roller-way incubator 1, and roller-way incubator 1 inner rim is provided with heat-insulation layer 23, hot-air is installed in roller-way incubator chamber above and reclaims return device 21, and air uniform diffuser 25 is installed in roller-way incubator chamber below.

The utility model advantage and good effect are:

1, roller-way group before and after milling train is changed into by original open type semi-enclosed, guaranteed milling train before and after rollgang group isolate with surrounding environment, thereby guaranteed that in operation of rolling rolled piece temperature is not subject to the impact of exterior temperature change.For example, because the burning-point of magnesium plate is 650 degrees Celsius, Optimal Temperature during rolling magnesium plate is 400 degrees Celsius, if sealing rolling, the temperature in milling train during higher than 650 degrees Celsius, can cause the spontaneous combustion of magnesium plate, when serious, can cause security incident.But, if milling train is exposed in air, can not guarantee that magnesium plate surface temperature is identical with central temperature, have a strong impact on mechanical property and the production efficiency of magnesium plate after rolling, so adopt semiclosed mechanism.

2, adopt the method for hot air circulate insulation, advantage is, can be at surrounding's formation thermostat layer of magnesium plate, guarantee the temperature that the rolling of magnesium plate needs, and make the top layer of magnesium plate and the temperature at center consistent, traditional heating wire utilizes thermal-radiating mode, being heated of magnesium plate can be inhomogeneous, after rolling, be prone to poor mechanical property, residual stress is large.

3, adopt the endless form of hot-air; the hot-air of uniform temperature is prepared after case sends from hot-air; below conveying roller, send into roller-way incubator; hot-air to the insulation of magnesium plate loops from bottom to top, gives the gas shield layer of a uniform temperature of magnesium plate, and the gas circulating is collected from pipeline above; roll upside is installed hot-air and is reclaimed cover; the air process filter that band is had surplus heat, then be transmitted back to hot-air preparation vanning, recycle saving thermal source.

4, adopt intelligent temperature, control pressurer system, temperature to space, the upper and lower both sides of rollgang is carried out Real-Time Monitoring, and the pressure in conveying roller casing is carried out to Real-Time Monitoring, on the pipeline of carrying hot-air, high temperature flow speed control valve is installed, regulate the flow velocity of hot-air, the reasonable temperature and the pressure that while guaranteeing the rolling of magnesium plate, have.

Accompanying drawing explanation:

Fig. 1 is the utility model perspective view;

Fig. 2 is structure top view of the present utility model;

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

Fig. 4 is the cutaway view of A-A in Fig. 3;

In figure: 1-roller-way incubator, 2-electric motor for rolling way, 3-hot-air recovery channel, 4-filter, 5, 8-air blast, 6-tonifying Qi pipeline, 7-filter, 9-hot-air is prepared case, 10-pressure sensor, 11-temperature sensor, 12-hot air delivery pipe road, 13-high temperature flow speed control valve, 14-milling train, the hot-air that 15-is arranged on above milling train reclaims cover, 16-rolling mill main motor, 17-reduction box, 18-universal-joint spindle, 19-rollgang, 20-magnesium slab, 21-hot-air retracting device, 22-hot-air reclaims branch pipe(tube), 23-heat-insulation layer, 24-incubator housing, 25-air uniform diffuser, 26-hot-air is carried branch pipe(tube), 27, 27 ＇-check valve.

The specific embodiment

Before Rolling Production, first the heating power supply of being prepared by hot-air to case 9 is opened, by resistance wire, hot-air is prepared to the interior gas-heated of case 9 to the temperature of setting, by hot-air duct 12, hot-air is transported in roller-way incubator 1, reasonable temperature while making temperature in roller-way incubator 1 remain on rolling magnesium plate, again warmed-up magnesium slab is sent in roller-way incubator 1, then enter mill milling, simultaneously, by having fallen warm hot-air in roller-way incubator 1, by hot-air retracting device 21 and hot-air, reclaim branch pipe(tube) 22, with the filter 4 of installing on hot-air recovery channel 3 and pipeline, air blast 5, hot-air is input to hot-air to be prepared and in case 9, carries out circulating-heating, simultaneously, by tonifying Qi pipeline 6 and filter 7 and air blast 8, fresh air being input to hot-air prepares in case 9, the hot-air running off in order to replenishment cycles.

Claims

1. the attemperator of a rolling magnesium alloy rollgang, its architectural feature is that a roller-way incubator (1 that pressure sensor and temperature sensor are housed in its case has been installed respectively in the rollgang group of the front and back of milling train (14), 1 ＇), the roller-way incubator of milling train one side of now take is example, the hot-air that pressure sensor (10) and temperature sensor (11) are housed in a case of the outside of this roller-way incubator (1) installation is prepared case (9), this hot-air is prepared case (9) and is connected with the bottom of roller-way incubator (1) by the hot air delivery pipe road (12) of high temperature flow speed control valve (13) is installed on it, simultaneously, hot-air is prepared case (9) also by air blast (5) is installed above it, the hot-air recovery channel (3) of filter (4) is connected with the interior rollgang upside of roller-way incubator (1), hot-air is prepared case (9) and also by air blast (8) and filter (7), is connected with the tonifying Qi pipeline (6) for supplementary air, hot-air recovery channel (3) and tonifying Qi pipeline (6) are prepared case (9) junction with hot-air respectively check valve (27 are installed respectively, 27 ＇), roller-way incubator (1) inner rim is provided with heat-insulation layer (23), hot-air retracting device (21) is installed in roller-way incubator chamber above, hot-air uniform diffuser (25) is installed in roller-way incubator chamber below.