CN210523972U

CN210523972U - Device for reducing martensite generated on surface of steel material in sawing process

Info

Publication number: CN210523972U
Application number: CN201921091704.9U
Authority: CN
Inventors: 张春雷; 耿兆明; 李国栋
Original assignee: Shigang Jingcheng Equipment Development And Manufacturing Co ltd
Current assignee: Shigang Jingcheng Equipment Development And Manufacturing Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-05-15
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to a device for reducing martensite generated on the surface of steel materials in the sawing process, which belongs to the technical field of steel sawing production equipment in the metallurgical industry. The technical scheme is as follows: saw cover (3) cover is on saw bit (2), and saw bit (2) are exposed to the lower part of saw cover (3), according to the direction of feed of saw machine, be equipped with a plurality of high pressure water injection well choke (1) at the rear of saw bit (2), and high pressure water injection well choke (1) are fixed on saw cover (3), set up polylith breakwater A (6) in the place ahead of saw bit (2), set up a breakwater B (9) directly over saw bit (2), set up a guiding gutter (7) respectively in the both sides of saw bit (2), breakwater A (6), breakwater B (9) and guiding gutter (7) are fixed respectively on saw cover (3), be equipped with tye (10) on breakwater A (6). The utility model has the advantages that: can prevent that cooling water from splashing to the steel surface, reduce the martensite that saw cuts in-process steel surface and produce, the chip removal is effectual.

Description

Device for reducing martensite generated on surface of steel material in sawing process

Technical Field

The utility model relates to a device for reducing martensite generated on the surface of steel materials in the sawing process, which belongs to the technical field of steel sawing production equipment in the metallurgical industry.

Background

At present, a sawing machine is important equipment in the production process of rolled steel and is mainly used for sawing steel at high temperature. Sawing machines generally comprise a saw blade, a saw cover, which covers the saw blade, a drive mechanism and a feed mechanism, the lower part of the saw cover being exposed from the saw blade in order to perform a sawing operation on the steel material.

When sawing steel, the following problems mainly exist: firstly, sawdust can be stuck on sawteeth, the tooth pasting phenomenon is caused, and the sawing effect of steel is influenced; secondly, cutting and friction can make the saw bit produce a large amount of heats, and what saw cut is still high temperature rolled piece simultaneously, leads to the saw bit to heat up rapidly, consequently, need install high-pressure water injection well choke on the saw cover, utilize high pressure water cooling saw bit and sawtooth, improve the life of saw bit. However, in the cooling process of the saw blade and the saw teeth, a large amount of cooling water splashes on the surface of the steel, so that martensite appears, and the uniformity of the steel structure is affected, therefore, the head and the tail of the steel need to be cut after the steel is off-line, the length of a single side needs to be cut by about 300mm, and the loss of the yield is about 10%.

Disclosure of Invention

The utility model aims at providing a reduce device that saw cuts in-process steel surface and produce martensite can prevent that the cooling water from splashing steel on the surface, reduces the martensite that saw cuts in-process steel surface and produce, improves the lumber recovery, solves the problem that exists among the background art.

The technical scheme of the utility model is that:

a device for reducing martensite generated on the surface of a steel material in a sawing process comprises a high-pressure water nozzle, a saw blade and a saw cover, wherein the saw cover is covered on the saw blade, the lower part of the saw cover is exposed out of the saw blade, a plurality of high-pressure water nozzles facing the saw blade and the saw teeth are arranged behind the saw blade according to the feeding direction of a saw, the high-pressure water nozzles are fixed on the saw cover, a plurality of water baffles A arranged up and down are arranged in front of the saw blade according to the feeding direction of the saw, a water baffle B is arranged right above the saw blade, a diversion trench is respectively arranged on two sides of the saw blade, the water baffles A, B and diversion trenches are respectively fixed on the saw cover, the water baffles A, B and diversion trenches are all arranged towards the rear of the saw blade and are arranged in a downward inclination manner, and a water.

The included angle between the water baffle A and the horizontal direction is 30 degrees, the included angle between the water baffle B and the horizontal direction is 45 degrees, and the included angle between the diversion trench and the horizontal direction is 10 degrees.

The diversion trench is positioned at the upper part of the saw cover.

The central line of the water flowing groove on the water baffle A is parallel to the axial direction of the saw blade.

The water baffle A and the water baffle B are both rectangular.

The cross section of the diversion trench is U-shaped.

The saw bit rear direction saw bit and the high pressure water injection well choke of sawtooth are nine, and wherein three high pressure water injection well choke is just to the sawtooth, and six high pressure water injection well choke set up respectively in the both sides of saw bit.

The water spraying directions of the three high-pressure water nozzles facing the sawteeth face the sawteeth, the included angle between the water spraying directions and the horizontal direction is 6 degrees, and the water spraying directions of the six high-pressure water nozzles on the two sides of the saw blade face the saw blade.

The utility model has the advantages that: through breakwater A and breakwater B on the saw cover and the guiding gutter on the two sides of the saw blade, cooling water can be prevented from splashing to the surface of steel, so that martensite generated on the surface of the steel in the sawing process is reduced, and the yield is improved. In addition, by adjusting the water spraying angle of the high-pressure water nozzle, a good chip removal effect can be obtained, and the saw blade is prevented from being burnt.

Drawings

FIG. 1 is a front view of the utility model;

fig. 2 is a side view of the utility model;

FIG. 3 is a front view of the water guard plate A of the utility model;

fig. 4 is a front view of the flow guide groove of the utility model;

FIG. 5 is a front view of a water baffle B of the utility model;

in the figure: the high-pressure water nozzle comprises a high-pressure water nozzle 1, a saw blade 2, a saw cover 3, a pressure plate 4, a rolled piece 5, a water baffle A6, a diversion trench 7, a saw door 8, a water baffle B9 and a water flowing groove 10.

Detailed Description

The invention will be further explained by way of example with reference to the accompanying drawings.

Referring to the attached drawings 1-5, a device for reducing martensite generated on the surface of a steel material in a sawing process comprises a high-pressure water nozzle 1, a saw blade 2 and a saw cover 3, wherein the saw cover 3 covers the saw blade 2, the lower part of the saw cover 3 is exposed out of the saw blade 2, a plurality of high-pressure water nozzles 1 facing the saw blade 2 and saw teeth are arranged behind the saw blade 2 according to the feeding direction of a sawing machine, the high-pressure water nozzles 1 are fixed on the saw cover 3, a plurality of water baffles A6 which are arranged up and down are arranged in front of the saw blade 2 according to the feeding direction of the sawing machine, a water baffle B9 is arranged right above the saw blade 2, two sides of the saw blade 2 are respectively provided with a diversion trench 7, the water baffle A6, the water baffle B9 and the diversion trench 7 are respectively fixed on the saw cover 3, the water baffle A6, the water baffle B9 and the diversion trench 7 are all arranged downward and face the rear part of the.

In this embodiment: referring to fig. 1 and 2, the feeding direction of the saw machine faces to the left side of fig. 1, the left side of fig. 1 is the front of the saw machine, the right side is the rear of the saw machine, the diameter of the saw blade 2 is 2000mm to 2100mm, and the rotating direction of the saw blade 2 is counterclockwise.

Nine high-pressure water nozzles 1 are arranged behind the saw machine, wherein the three high-pressure water nozzles are opposite to the sawteeth and are fixed on the right side of the saw cover 3, and an included angle between the three high-pressure water nozzles and the horizontal direction is 6 degrees, so that the saw machine mainly has the functions of discharging scrap iron accumulated in the sawteeth and preventing tooth paste; the other six high-pressure water nozzles are respectively arranged on two sides of the saw blade 2 and mainly used for cooling the saw blade 2.

The temperature of the saw cutting rolled piece is more than 750 ℃ usually, and the pressure of the high-pressure water nozzle 1 is required to be 40-60 bar.

Referring to fig. 1 and 5, the water guard B9 is rectangular, and the water guard B9 is welded to the saw cover 3 directly above the saw teeth 2 at an angle of 45 ° to the horizontal.

Referring to fig. 1 and 3, the water guard plate a6 is rectangular, the water trough 10 is arranged on the water guard plate a6 to facilitate the removal of redundant water, and the three water guard plates a6 are respectively welded on the left side of the saw cover 3, and the angles of the three water guard plates are 30 degrees to the horizontal direction.

Referring to the attached drawings 1, 2 and 4, the section of the backflow groove 7 is U-shaped, the backflow groove 7 is arranged at a position 400mm away from the upper center of the saw blade 2, the backflow grooves 7 are additionally arranged on two sides of the saw blade 2 respectively, the two backflow grooves 7 are respectively arranged on the inner sides of the saw cover 3, the angle of each backflow groove 7 and the horizontal direction form 10 degrees, and cooling water can be effectively prevented from splashing on the surface of steel. Meanwhile, the cooling water intercepted from the upper part is led out of the sawing machine.

Claims

1. The utility model provides a reduce device that saw cuts in-process steel surface and produces martensite, contain high pressure water injection well choke (1), saw bit (2) and saw cover (3), saw cover (3) cover on saw bit (2), saw bit (2) are exposed to the lower part of saw cover (3), according to the direction of feed of sawing machine, be equipped with a plurality of high pressure water injection well chokes (1) towards saw bit (2) and sawtooth at the rear of saw bit (2), high pressure water injection chokes (1) are fixed on saw cover (3), its characterized in that: according to the feeding direction of the saw, a plurality of water baffles A (6) which are arranged up and down are arranged in front of the saw blade (2), a water baffle B (9) is arranged right above the saw blade (2), two sides of the saw blade (2) are respectively provided with a diversion trench (7), the water baffles A (6), the water baffles B (9) and the diversion trenches (7) are respectively fixed on the saw cover (3), the water baffles A (6), the water baffles B (9) and the diversion trenches (7) are all arranged towards the rear of the saw blade (2) and downwards inclined, and a water flowing groove (10) is arranged on the water baffles A (6).

2. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 1, wherein: the included angle between the water baffle A (6) and the horizontal direction is 30 degrees, the included angle between the water baffle B (9) and the horizontal direction is 45 degrees, and the included angle between the diversion trench (7) and the horizontal direction is 10 degrees.

3. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 1 or 2, wherein: the diversion trench (7) is positioned at the upper part of the saw cover (3).

4. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 1 or 2, wherein: the central line of the water flowing groove (10) on the water baffle A (6) is parallel to the axial direction of the saw blade (2).

5. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 1 or 2, wherein: the water baffle A (6) and the water baffle B (9) are both rectangular.

6. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 1 or 2, wherein: the section of the diversion trench (7) is U-shaped.

7. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 1, wherein: the rear of the saw blade (2) is nine high-pressure water nozzles (1) facing the saw blade (2) and the saw teeth, wherein three high-pressure water nozzles are opposite to the saw teeth, and the six high-pressure water nozzles are respectively arranged on two sides of the saw blade (2).

8. The device for reducing martensite generated on the surface of the steel material during the sawing process as claimed in claim 7, wherein: the water spraying directions of the three high-pressure water nozzles facing the sawteeth face the sawteeth, included angles between the three high-pressure water nozzles and the horizontal direction are 6 degrees, and the water spraying directions of the six high-pressure water nozzles on two sides of the saw blade (2) face the saw blade (2).