CN104959592A

CN104959592A - Drainage tube ignition method

Info

Publication number: CN104959592A
Application number: CN201510383454.6A
Authority: CN
Inventors: 王平; 张飞
Original assignee: Kocel Steel Foundry Co Ltd
Current assignee: Kocel Steel Foundry Co Ltd
Priority date: 2015-07-03
Filing date: 2015-07-03
Publication date: 2015-10-07

Abstract

The invention relates to an ignition method applied to a drainage tube at a casting site, in particular to a drainage tube ignition method. The drainage tube ignition method is characterized by comprising the steps that before casting of a steel ladle, a hose is used for connecting a drainage tube and a nearest oxygen pipeline valve on the site, then a device containing metal chips is placed at the position which is 1.5-2 m away from the steel ladle on the casting site, and flammable liquid of 400-500 ml is added into the device; after the steel ladle is aligned with a drainage tank, the metal chips are ignited, then the oxygen valve is opened, the drainage tube is suspended at the position which is 1-2 cm higher than a flame, and ignition of the drainage tube can be completed. The method is unique, and solves the problems that in the prior art, backfire of an oxygen lance is prone to occurring, and an acetylene cylinder is ignited and even a gas tank may explode due to splashing of molten steel in casting; the method avoids carrying of an oxygen tank and an acetylene tank in steel ladle casting drainage, simplifies the drainage process and saves production cost.

Description

A kind of drainage tube ignites method

Technical field

The present invention relates to a kind of method of igniting being applied to the on-the-spot drainage tube of cast, especially relate to a kind of drainage tube and to ignite method.

Background technology

For a long time, steel-casting foundry ladle open water time, need shift to an earlier date that oxygen tank, acetylene cylinder are carried to cast is on-the-spot, use flexible pipe to be connected on oxygen rifle by oxygen, acetylene, to be ignited drainage tube by oxygen rifle, and then disclose out sprue gate with the oxygen rifle with flame and complete ladle draining.Because factory's gas cylinder storeroom distance cast scene is comparatively far away, need before each cast to arrange special messenger to be responsible for carrying oxygen tank, acetylene cylinder, labor intensive, material resources.And using the ignite method of igniting of drainage tube of oxygen rifle easily to cause the flexible pipe generation tempering connecting acetylene cylinder, on-the-spot during cast sparks fly off molten steel easily ignites acetylene cylinder, even blasts, there is potential safety hazard.Simultaneously acetylene and oxygen cost higher, and need strict storage ambient, add plant produced cost.

Also do not overcome the method for above-mentioned defect at present.

Summary of the invention

The object of the invention is the defect overcoming prior art, oxygen rifle tempering in a kind of method uniqueness, solution prior art is provided easily to occur, and during cast, sparks fly off molten steel ignites the problem that acetylene cylinder even may cause gas tank to explode, the carrying of oxygen tank, acetylene cylinder when avoiding steel ladle pouring drainage, simplifies drainage process, a kind of drainage tube of saving production cost ignites method.

The present invention realizes in the following way:

A kind of drainage tube ignites method, it is characterized in that: the method is for before ladle is opened and watered, flexible pipe is used drainage tube and on-the-spot oxygen pipeline valve nearby to be coupled together, then the device filling metal fillings is placed on cast on-the-spot distance ladle 1.5m ~ 2.0m place, and adds 400ml ~ 500ml flammable liquid toward described device, after drainage tank aimed at by ladle, light described metal fillings, then open oxygen valve, unsettled for drainage tube above flare 1cm ~ 2cm place, complete drainage tube and ignite;

The common steel tube of described drainage tube to be external diameter be φ 15mm;

The described device filling metal fillings is bottom surface radius φ 180 ~ φ 200mm, high 200 ~ 250 mm, and material is the iron flask of common gray iron;

Described metal fillings is steel scrap bits, and fill 2/3 ~ 3/4 of the device degree of depth of metal fillings described in its consumption reaches, described flammable liquid is diesel oil, fills 1/3 ~ 1/2 of the device degree of depth of metal fillings described in its consumption should reach.

The present invention has following effect:

1) method is unique: after the present invention utilizes flammable liquid to contaminate metal fillings, metal fillings holds incendive feature, dexterously metal fillings is used as the raw material of the on-the-spot drainage tube that ignites of cast, has following beneficial effect.

2) the drainage tube mode of igniting after improving does not re-use oxygen, acetylene, eliminates on-the-spot potential safety hazard, and eliminates the long distance carrying of oxygen cylinder, acetylene cylinder completely, simplifies drainage process, saves energy consumption, reduce manpower and use, reduce costs.

3) metal fillings ignited needed for drainage tube, at steel-casting foundry's wide material sources, consumption is very little, does not almost have cost; Metal fillings flame focus after lighting is high, is easy to the drainage tube that ignites; Simple to operate.

4) of the present invention lighting contaminates the metal fillings of flammable liquid in the mode of the drainage tube that ignites, and structure is simple, succinct safety.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Detailed description of the invention

As shown in Figure 1: with flexible pipe 11, drainage tube 8 is connected with on-the-spot oxygen pipeline valve nearby, the iron flask 12 filling steel cuttings 9 is placed on cast on-the-spot distance ladle 1.5m ~ 2.0m place, and add 400ml ~ 500ml diesel oil 10 toward described iron flask, light, then oxygen valve is opened, unsettled for the end of drainage tube 8 above flare 1cm ~ 2cm place, complete igniting of drainage tube 8.

The common steel tube of described drainage tube 8 to be external diameters be φ 15mm, iron flask 12 bottom surface radius φ 180 ~ φ 200mm, high 200 ~ 250 mm, material is that common gray iron can meet instructions for use.The consumption of described steel scrap bits reaches 2/3 ~ 3/4 of the iron flask degree of depth, and described diesel oil consumption should reach 1/3 ~ 1/2 of the iron flask degree of depth.

Claims

1. a drainage tube ignites method, it is characterized in that: the method is for before ladle is opened and watered, flexible pipe is used drainage tube and on-the-spot oxygen pipeline valve nearby to be coupled together, then the device filling metal fillings is placed on cast on-the-spot distance ladle 1.5m ~ 2.0m place, and adds 400ml ~ 500ml flammable liquid toward described device, after drainage tank aimed at by ladle, light described metal fillings, then open oxygen valve, unsettled for drainage tube above flare 1cm ~ 2cm place, complete drainage tube and ignite.

2. a kind of drainage tube as claimed in claim 1 ignites method, it is characterized in that: the common steel tube of described drainage tube to be external diameter be φ 15mm.

3. a kind of drainage tube as claimed in claim 1 ignites method, it is characterized in that: described in fill metal fillings device be bottom surface radius φ 180 ~ φ 200mm, high 200 ~ 250 mm, material is the iron flask of common gray iron.

4. a kind of drainage tube as claimed in claim 1 ignites method, it is characterized in that: described metal fillings is steel scrap bits, 2/3 ~ 3/4 of the device degree of depth of metal fillings is filled described in its consumption reaches, described flammable liquid is diesel oil, fills 1/3 ~ 1/2 of the device degree of depth of metal fillings described in its consumption should reach.