The role of adding nitrogen to the reflow oven Advantages and disadvantages of nitrogen reflow soldering
2021-06-23
Application of Propane Gas Efficient Cutting Gas
Release time: 2021-06-23 11:09:38
Source: Yigas
Author: Guangzhou Yigas Special Gas
Reading volume:
PropaneCutting gas characteristicsPropane：Through the treatment of propane gas, propylene gas,Acetylene gasThe experimental comparison and theoretical discussion of the three gases clarified that the new type of cutting propane gas has the characteristics of high efficiency, low cost, safety, and environmental protection.
When propane gas is used for steel plate cutting, the cutting cost varies with the thickness of the plate. When used for thick steel plate cutting, the cost savings are significant, and it is suitable for the cutting of scrap steel.
The types of gas used in production and their main properties are shown in the table. In the past, acetylene was used the most. In recent years, due to the low price of propane, safe use and sufficient gas source, the overall effect is better than that of acetylene and other gas, so the consumption is greatly increased.
|
Gas type
|
Density/(kg/m) (under standard state)
|
High calorific value/(kg/m) (under standard state)
|
Low calorific value/(kg/m) (under standard state)
|
Oxygen/gas (volume ratio)
|
Lowest ignition temperature/℃
|
Combustion calorimeter temperature/℃
|
|
Acetylene
|
1.091
|
58.502
|
56.488
|
2.5
|
335
|
2620
|
|
Propane
|
2.0102
|
101.266
|
93.240
|
5
|
450
|
2155
|
|
Acrylic
|
1.9136
|
93.667
|
87.667
|
4.5
|
460
|
2224
|
|
Natural gas (methane)
|
0.7174
|
39.842
|
35.906
|
2
|
540
|
2043
|
|
Coke oven gas
|
0.4～0.5
|
18.65
|
16.49
|
0.85
|
406
|
1931.41
|
|
hydrogen
|
0.0898
|
12.745
|
10.786
|
0.5
|
400
|
2210
|
|
Ethylene
|
1.2065
|
63.438
|
59.477
|
3
|
425
|
2343
|
|
Liquefied petroleum gas (50% propane and butane each)
|
2.0416
|
117.6
|
108.4
|
5.75
|
408
|
2143
|
|
Propane and propylene mixed gas (50% each)
|
1.9619
|
97.467
|
90.45
|
4.75
|
455
|
2190
|
|
Acetylene and propylene mixed gas (80%: 20%)
|
1.2555
|
65.535
|
62.724
|
2.9
|
360
|
2541
|
|
Mixed gas of acetylene and propane (80%: 20%)
|
1.2748
|
67.055
|
63.838
|
3
|
358
|
2527
|
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