Cutting equipments 1 페이지

Cutting equipments

Cutting equipments by using Brown Gas

By replacing Brown Gas instead of cutting fuel (LNG + preheated oxygen), it improves the cutting speed and the cutting width (Loss) to significantly reduce dust,
thereby improving the environment and reducing costs.

[ER-200K cutting system]
[NER-23K cutting site,Japan Nisshin Steel]
[600mm Tundish cutting]
See video
[250mm cold slab cutting]
See video
[810mm SCM cutting]
See video
[250mm hot slab cutting]
See video
[Cylinder cover cutting]
See video
[Round rod bundle cutting]

Delivery record

CUSTOMER	YEAR	DESCRIPTION
POSCO Scrap yard (Gwangyang, Korea)	2006	Thickness 700mm Tundish blocks, Scraps cutting : 10Nm3/h Brown Gas Generator 10Set
POSCO 2nd TCM Plant (Gwangyang, Korea)	2007	Thickness 250mm Hot Slab cutting : 10Nm3/h Brown Gas Generator 12Set
POSCO Special Steel co. (Changwon, Korea)	2010	Thickness 1,000mm Tundish blocks, Scraps cutting : 21.5Nm3/h Brown Gas Generator 4Set
Saea Besteel(Gunsan, Korea)	2012	Thickness 1,000mm Ingot, Scraps cutting : 21.5Nm3/h Brown Gas Generator 4Set
Nishin Steel(Japan)	2012	Thickness 220mm Stainless, Slab cutting : 10Nm3/h Brown Gas Generator 1Set
Taeyang Machinery (Japan)	2013	Thickness 250mm Slab cutting : 10Nm3/h Brown Gas Generator 1Set
Okumurakumi (Nippon Steel Partner, Japan)	2015	Thickness 1.500mm Pig Iron : 21.5Nm3/h Brown Gas Generator 4Set
SCE Group (Australia)	2017~2018	Thickness 250mm Slab cutting : 4.6Nm3/h Brown Gas Generator 5Set
Stein Group (USA)	2018	Thickness 250mm Slab cutting : 4.6Nm3/h Brown Gas Generator 2Set
Ganji co. (China)	2018	Thickness 250mm Slab cutting : 4.6Nm3/h & 10Nm3/h Brown Gas Generator each 1Set
E&E (Shanghai) Corporation (Qinghuan huanbao)	2020~2021	Thickness 600mm Tundish blocks, Scraps cutting : 21.5Nm3/h Brown Gas Generator 3Set
BAO STEEL Transport Section (Shanghai)	2022.12	Thickness 500mm Scraps cutting : 21.5Nm3/h Brown Gas Generator 11Set
BAO Steel 1st Steelmaking Section (Shanghai)	2022.12	Thickness 1.500mm Slagsteel (Materials in which refractories and iron are mixed) cutting : 21.5Nm3/h Brown Gas Generator 3Set
BAO Steel 2nd Steel making Section (Shanghai)	2023.03	Thickness 1.500mm Slagsteel (Materials in which refractories and iron are mixed) cutting : 21.5Nm3/h Brown Gas Generator 4Set
Nanqing Steel (China)	2023.03	Thickness 1.500mmSlagsteel (Materials in which refractories and iron are mixed) cutting : cutting : 21.5Nm3/h Brown Gas Generator 4Set
Nanqing Steel (China)	2023.06	Thickness 1.500mmSlagsteel (Materials in which refractories and iron are mixed) ) cutting : cutting : 21.5Nm3/h Brown Gas Generator 4Set

Cutting features by using Brown Gas : Environmentality

By reducing the cutting width, the amount of fume generated can be reduced to 50 to 80%, improving the working environment and reducing dust collection equipment.

[LPG Cutting site]
[Brown Gas Cutting site]

Cutting features by using Brown Gas : Economic efficiency

It is possible to reduce costs by improving productivity and reducing cutting width.

Reducing cutting width [LPG vs Brown Gas]

[Comparison of 250mm slab cutting]
[Reducing 67% of cutting width of
650mm carbon alloy steel]
[Reducing 54% of cutting width of
140~200mm Stainless steel tundish slug

250mm Hot slab cutting comparison table [LNG vs Brown gas]

Contents	LNG+Preheating oxygen	Brown Gas	Remarks
One cutting time	about 23.05min	about 13.92min	About 1.8 times productivity improvement
High pressure consumption	35.35Nm³ (11.5 Bar)	17.50Nm³ (10 Bar)	Saving of over 60% of oxygen when not using preheated oxygen and considering cutting speed
Cutting width(Loss)	20mm	11mm	Reduction of cutting width of 45% and fume generation more than 50%

250mm Hot slab cutting comparison table [LNG vs Brown gas]

Contens	LNG	Brown Gas	Remarks
Cutting speed	250mm/min	460mm/min	1.8x Faster
Cutting width(Loss)	9~10mm	6~7mm	30% Save
Step	Steps are generated by using two torches	Step is not generated by using one torch	-
Fume generation	Massive occurrence	small occurrence	70% Decrease
Environmentality	CO2 occurrence	No CO2 occurrence	-
Safety	Choking and explosion hazard	No choking and explosion hazard	-

220mm Stainless steel cutting comparison table [LNG vs Brown gas] / (Unit : CNY)

CONTENSTS			POSCO	E&E	Economic efficiency compared to LNG
Economic efficiency	LNG	2.8486 元/N㎥	0.167 N㎥/min(= 10N㎥/h) x 3.125min/15.642ton x 2.8486CNY/N㎥= 0.095CNY/ton - Cutting speed : 320mm/min - 1,000mm (= 1m) Cutting time : 3.125min - Cutting amount : about 1.1Mton/year (Average length 9m x Average width 1m x Thickness 0.22m x STS specific gravity 7.9)/Cut = 15.642ton/Cut 15.642ton/Cut x 5.5Cut/charge = 86.031ton/charge 86.031ton/charge x 1,064charge/month x 12month/year = about 1.1Mton/year	0CNY/ton	(-) 0.095CNY/ton
	Brown Gas	2.318 元/N㎥	0CNY/ton	0.25N㎥/min (= 15N㎥/h) x 2min/15.642ton x 2.318CNY/N㎥ = 0.074CNY/ton - Cutting speed : 500mm/min - 1,000mm (= 1m) Cutting time : 2min - Brown Gas Price : 3.9KWh/N㎥ x 0.5943CNY/KW h = 2.318CNY/N㎥	(+) 0.074CNY/ton
	Oxygen (High pressure, Pre-heat)	0.7318 元/N㎥	High pressure : 0.833N㎥/min(= 50N㎥/h) x 3.125min/15.642ton x 0.7318CNY/N㎥ = 0.12CNY/ton Pre-heat : 0.042N㎥/min(= 50N㎥/h) x 3.125min/15.642ton x 0.7318CNY/N㎥ = 0.006CNY/ton	High pressure : 0.67N㎥/min(= 40N㎥/h) x 2min/15.642ton x 0.7318CNY/N㎥ = 0.063CNY/ton Pre-heat: 0CNY/ton	(-) 0.063CNY/ton (50% Reduction)
	Total energy cost		0.221CNY/ton	0.137CNY/ton	(-) 0.084CNY/ton (38% Reduction)
	Iron powder	about 30 CNY/Kg	(0.23Kg/min x 3.125min)/15.642ton = 0.046Kg/ton 0.046Kg/ton x about 30CNY/Kg = 1.38CNY/ton	(0.16Kg/min x 2min)/15.642ton = 0.020Kg/ton 0.020Kg/ton x about 30CNY/Kg = 0.60CNY/ton	(-) 0.78CNY/ton (56.5% Reduction)
	Cutting loss area		Cutting loss area: 3,630mm²/Cut ※ Upper cutting length : 13mm, Lower cutting length : 20mm	Cutting loss area : 1,210mm²/Cut ※ Upper cutting length : 5mm, lower cutting length : 6mm	(-) 2,420mm²/Cut (66.7% Reduction)
Environmental effect			Brown Gas reduces dust generation by about 70% compared to LNG, which significantly reduces the maintenance cost of dust collection equipment and improves the working environment.