CN1267713A

CN1267713A - Mixed welding and cutting fuel gas and its preparation

Info

Publication number: CN1267713A
Application number: CN 99103833
Authority: CN
Inventors: 谢坤为; 刘立才; 赵海桥
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-23
Filing date: 1999-03-23
Publication date: 2000-09-27

Abstract

The mixed welding and cutting fuel gas is prepared by mixing LPG, the first additive and the second additive, and the second additive is prepared by mixing ethanol, sodium chloride, benzene, hydrogen peroxide solution, gasoline, potassium permanganate and water. The fuel gas may be used in welding and cutting.

Description

The preparation method of the mixed combustion gas of a kind of welding and this combustion gas thereof

What the present invention relates to is a kind of fuel and this fuel preparation method thereof of industrial use, and in particular, that relate to is the preparation method of the mixed combustion gas of a kind of welding and this combustion gas thereof.

The weldering of the industrial usefulness of China, to cut combustion gas mainly be acetylene, usage quantity accounts for more than 90%, its advantage be temperature height, firepower strong, can weld and can cut, people have been accustomed to using this industrial combustion gas, but its main drawback: the one, to consume the considerable fuel and the energy owing to produce the calcium carbide of acetylene, its efficient of making the calcium carbide process is low, the cost costliness; The 2nd, in making calcium carbide and production acetylene process, produce public hazards, cause environmental pollution; The 3rd, in use produce tempering, easily blast poor stability.For overcoming above-mentioned shortcoming, doping comes replaced acetylene in liquefied petroleum gas (LPG) thereby the scientific worker studies.The advantage of liquefied petroleum gas (LPG): the one, price is low, good economy performance; Two are to use safety, and be difficult for blast, but its weakness has three: one is that temperature is lower than acetylene, weld, when cutting metal warm up time long slightly; The 2nd, welding property is poor, produces welding slag in the welding, and the influence welding particularly can't be welded the steel plate below the 2mm; The 3rd, when temperature was lower than below 10 ℃, temperature was low, and gasifying liquefied petroleum gas is slow, influence welding and cutting.

The objective of the invention is for overcoming the shortcoming of existing welding and cutting fuel gas, the preparation method of the mixed combustion gas of a kind of welding and this combustion gas is provided, and its feature is that cost is lower than acetylene, and welding property is better than acetylene and liquefied petroleum gas (LPG), still welding below 10 ℃, cutting, safe in utilization.

The objective of the invention is to realize by the following technical solutions:

It contains 30～95% oil liquefied gas, an additive of 0～60%, and the mixed combustion gas that 5～10% No. two additives are formed, the summation of three components is 100%; A described additive is Y G B T H H Q; Described No. two additives are that per 100 parts of additives need 37 parts of ethanol, 3 parts in sodium-chlor, and stupid 13 parts, 5 parts in hydrogen peroxide, 30 parts in gasoline, 2 parts in potassium permanganate, 10 parts in water mixes aforesaid combination.

The present invention weldering, to cut combustion gas be to adopt following method preparation: an additive of 0～60% that is about to prepare, and 5～10% No. two additives, 30～95% oil liquefied gas is mixed to form mixed combustion gas, and the summation of three components is 100%.

Advantage of the present invention:

One, main liquid is liquefied petroleum gas (LPG) in the combustion gas owing to welding, cutting, and therefore, cost is lower by 30～70% than acetylene, and security is better than acetylene;

Two, owing to contain Y G B T H H Q in the welding and cutting fuel gas, therefore, temperature of combustion has overcome long problem of liquefied petroleum gas for preheating time than liquefied petroleum gas (LPG) temperature height, has overcome liquefied petroleum gas (LPG) in addition and can not weld the deadly defect of 2mm with lower steel plate; Can weldering, can cut, prove in the practice that welding quality, cutting quality are all better than acetylene and liquefied petroleum gas (LPG);

Three, overcome the defective of liquefied petroleum gas (LPG) in bad use below 10 ℃, welding and cutting fuel gas can both use four seasons.

Four, this combustion gas preparation technology is simple.

For deepening understanding, enumerate following example and do detailed explanation the preparation method of the mixed combustion gas of a kind of welding of the present invention and this combustion gas:

Example 1, when envrionment temperature more than 20 ℃, the prescription of this combustion gas is as follows: 0～20%, No. 2 additives 5～10% of 95%, No. 1 additive of liquefied petroleum gas (LPG), the summation 100% of each component.

A described additive is: Y G B T H H Q, described No. two additives are that per 100 parts of additives need 37 parts of ethanol, 3 parts in sodium-chlor, and stupid 13 parts, hydrogen peroxide is 5 parts, 30 parts in gasoline, 2 parts in potassium permanganate, 10 parts in water mixes aforesaid combination.

With 95% liquefied petroleum gas (LPG), an additive of 0～20%, 5～10% No. two additives add together and mixedly to form just and can use, but the summation of above three kinds of compositions is 100%.The advantage of using above-mentioned prescription is to have overcome liquefied petroleum gas (LPG) can not weld the shortcoming of 2mm with lower steel plate, has improved welding property preferably, and welding property and cutting property are better than acetylene, and cost is lower than acetylene.

Example 2, when envrionment temperature is between 10 ℃～20 ℃, this weldering, cut mixed combustion gas and adopt following prescription: 70%, number additive 0～60% of liquefied petroleum gas (LPG); No. two additives 5～10%; The summation of three components is 100%.The preparation method of this combustion gas is with example one.

Example 3, when envrionment temperature below 10 ℃ the time, this weldering, cut mixed combustion gas and adopt following prescription: liquefied petroleum gas (LPG) 30～50%, 0～60%, No. two additive 5～10%, three component total points of an additive are 100%.

Comprehensive above-mentioned three examples, in use reality has proved that this air mixture is better than acetylene and liquefied petroleum gas (LPG).

Claims

1. the preparation method of the mixed combustion gas of a welding and this combustion gas thereof is characterized in that: it contains weight ratio is 30～95% liquefied petroleum gas (LPG), 5～10% No. 2 additives, 0～60% No. 1 additive, the summation of three components is 100%, and described No. 1 additive is YGBTHHQ, described No. 2 additives per 100 parts by 37 parts of ethanol, 3 parts in sodium-chlor, stupid 13 parts, 5 parts in hydrogen peroxide, 30 parts in gasoline, 2 parts in potassium permanganate, 10 parts of mixed forming of water.

2. the preparation method of the mixed combustion gas of a welding is characterized in that it uses following component: liquefied petroleum gas (LPG) 30～95%, 0～60%, No. 2 additives 5～10% of No. 1 additive, mixed being prepared from.