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shot blast

Shot Blast

Two types of shot blast machines with rotating tables and roller are used for complementary operations of parts and creating compressive stress on the surface, especially in the gears.

laboratory

Laboratory

  • Nasim Sobh Farda Group of Companies continuously examines and validates the processes and results by having fixed and portable hardness tester and micro-hardness and also a light microscope with 1000x magnification.
  • Hardness and microstructure control and effective penetration depth of the parts are carefully done
  • The validity of the laboratory certificates is very important and valuable for us.

Wellman controls atmospheric furnace

Wellman controls atmospheric furnace

  • Wellman controls atmospheric furnace with electric heating and application dimensions of 120 * 60 *  60 and height of 50 cm
  • it’s enough for the heat treatment of different types with Quinch series which is the quality with preheating furnace and washing machine, the second line of heat treatment of Nasim Sobh Farda.

Aichelin

Aichelin

  • The Aichelin heat treatment line is equipped with a preheated and tempered electric furnace, washing, and gas furnace with a capacity of 200 kg charge and it is used for a wide range of parts heat treatment including hardening, annealing, normalizing, soft annealing, carburizing.
  • Both the main and preheated Aichelin furnaces are equipped with a ceiling circulator fan to homogenize temperature and atmosphere, and the uniformity of properties after heat treatment is the result of the same circulator systems.
  • The quenching chamber of the parts is equipped with two powerful stirring motors that prevent steam from forming on the parts when the parts are quenched by stirring the oil.

Supply of specialized steels of copper alloys and The new generation of tool steels

Supply of specialized steels of copper alloys and the new generation of tool steels

  • Nasim Sobh Farda Group of Companies, We supply a new generation of German tool steels and specialized steels for consumption in various industries, including oil and gas and petrochemicals, aviation, steel, and cars.
  • German steelmakers with more than 300 years of experience in making steel and by trusting in up-to-date experience and knowledge, The german considered as a complete reference of tool steel.
  • Nasim Sobh Farda Group of Companies provides a variety of copper superalloys, including bronzes, beryllium copper, Aluminum bronze, and pure copper, and also provide orders with the design and plan desired by the customer.

Air

What is air?

  • Air is the Earth’s natural atmosphere.
  • Air-gas is non-flammable, colorless, odorless, and non-corrosive, and composed.
  • Air is a mixture of gases, such as argon, water vapor, a small amount of CO2, Oxygen, nitrogen, and small amounts of various other gases.
  • In the industry, artificial air is produced by combining oxygen and pure nitrogen in the form of 19.5 to 23.5% auxin with nitrogen balance.
  • The air in the liquid phase, a clear liquid with a blue tint and in the presence of CO2 In it, a little milky color.

Available grades:

  • The amount of humidity in the air varies from one height to another and from region to region.
  • In the zero or synthetic air industry, it is deliberately produced from a combination of pure oxygen and pure nitrogen, so it is expressed by the purity of the components used in production.
  • For example, the 5.0N grade of air, which represents the air produced from a combination of 19.5 to 23.5% of 5.0N grade oxygen with 5.0N nitrogen balance.

storage and transport tanks:

  • Compressed air is stored and transported in pressurized cylinders with different pressures and with different volumes.

Compatible and incompatible materials:

  1. Dry air is non-corrosive.
  2. The equipment in contact with it can be made of any ordinary metal.
  3. Gaseous air is usually carried in pressurized cylinders, tubes, and tube trailers.

 

 

Physical properties

Molecular Weight 28.975
steam pressure 2484 K. Pa @ -150 0C
Gas density 1.2 Kg/m3 @ 21.1 0C and 1 atm
The latent heat of evaporation at the boiling point 205 KJ/Kg
Special heat capacity CP=1.01 KJ/Kg.0C

CV=0.720 KJ/Kg.0C

CP/CV=1.40
Critical temperature -140.60C
Critical pressure 3771 KPa(a)
Solubility in water 0.0292 vol.(gas)/Vol.(Water) at 00C and 1 atm
Explosion / ignition range in air  Non-Flammable Gas

Compatibility with materials

Material Compatibility of Air

 

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

 Viton® Buna-N Neoprene Polyurethane

O

Kalrez
GAS

 

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Safty

Classification of dangerous Products:

Dangerous Products Transport Information:

 

IATA IMDG DOT
UN 1002 UN 1002 UN 1002 UN NUMBER
Air, compressed Air, compressed Air, compressed UN SHIPPING NAME
2.2 2.2 2.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

Carbon monoxide

What is Carbon Monoxide (CO)?

  • Carbon monoxide is a colorless, odorless, toxic, and flammable gas.
  • Liquid carbon monoxide is a cryogenic fluid.
  • Carbon monoxide can be found at -192 0C and atmospheric pressure.
  • Carbon monoxide is lethal in less than an hour if it has a concentration of more than 4% in the air.
  • Inhalation of high concentrations of this gas causes sudden and asymptomatic fainting.

Available grades:

  • Carbon monoxide is available in various grades from %98 to %99.99.
  • Existing grades of carbon monoxide are:

% 98.5,% 99,% 99.5,% 99.99

Tanks and maintenance:

  • Carbon monoxide is transported in cylinders, trailer tubes, and cryogenic bulk tanks.

Compatible and incompatible materials:

  1. Ordinary steels and metals are compatible with dry, sulfur-free carbon monoxide.
  2. The presence of carbon dioxide impurities and moisture in carbon monoxide increases the corrosive properties of these gases.
  3. High-pressure plant equipment is usually made of copper.
  4. Copper is resistant to carbon monoxide.
  5. High-grade chromium steels are highly resistant to corrosion of carbon monoxide with sulfur impurities.
  6. Butyl rubber and chloro-fluoro-carbon polymers such as VITON should not be used due to swelling in carbon monoxide.

Physical properties

Molecular Weight 28.01
steam pressure  760mmHg@ -191 0C
Gas density  1.161Kg/m3 @ 21.1 0C and 1 atm
Latent heat of vaporization at temperatures of -19100C and 1atm 215.8 KJ/Kg
Specific heat capacity at temperature

15.6 0C

At 1atm

 CP=1.037 KJ/Kg.0C

CV=0.7394 KJ/Kg.0C

CP/CV=1.40
Critical temperature -140.2 0C
Critical pressure 4399 K.Pa
Solubility in water  0.035vol.(gas)/Vol.(Water) at 0 0C and 1 atm
Explosion / ignition range in air  Flammable Gas

Compatibility with materials

Material Compatibility of Carbon monoxide

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

 Viton® Buna-N Neoprene Polyurethane

O

Kalrez
GAS

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

ُSafty

Classification of dangerous Products:

Dangerous Products Transport Information:

(For refrigerated liquid)   :UN 2201

IATA IMDG DOT
UN 1016 UN 1016 UN 1016 UN NUMBER
Carbon monoxide, compressed Carbon monoxide, compressed Carbon monoxide, compressed UN SHIPPING NAME
2.3 2.3 2.3 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

Ammonia

What is Ammonia?

  • Ammonia is a combination of the two gaseous elements hydrogen and nitrogen.
  • The bond ratio of three hydrogen molecules to one nitrogen molecule is formed.
  • The chemical formula of ammonia Is NH3.

Ammonia storage and transport tanks:

  • Moisture-free (dry) ammonia is available in the form of pressurized gas in cylinders, cryogenic tanks, and non -cryogenic tanks.
  • Also, dry ammonia is stored in bulk tanks with a large volume and installed on the ground.
  • The large storage tanks, which are not usually installed on the ground, have very low pressure and have a cooling cycle as well as thermal insulation.

Ammonia grades:

Acceptable grades used in various industries are:

%99.98

Technical grade

 %99.5

Commercial grade
%99.995

Metallurgical grade

 %99.7

Agricultural grade
%99.999

Semiconductor Industry Grade

 %99.95

Refrigeration grade

Almost %80 of the total ammonia produced is used in the fertilizer industry.

Safety precautions

  1. People with chronic illnesses or long-term allergies should not be hired where there is ammonia.
  2. Ammonia ions are in fact a phenomenon of the biological system, yet ammonia in the atmosphere has a very stimulating effect on the mucous membranes of the eyes, nose, throat, and lungs.
  3. Too much ammonia can have destructive effects on tissues.
  4. Too much ammonia can lead to laryngeal and bronchial problems.
  5. Too much ammonia can cause edema and Obstruction of breathing.

Compatible and incompatible materials:

  • Ammonia doesn’t affect most metals without moisture.
  • When ammonia combines with water vapor; Affects copper, zinc, and their alloys.
  • The use of copper, zinc, silver, and their alloys in the manufacture of ammonia tanks is prohibited.

Physical properties

Molecular Weight 17.031
steam pressure 786.7 K. Pa @ 21.1 0C
Gas density 0.771 Kg/m3 @ 0 0C and 1 atm
Latent heat evaporates at boiling point and 1atm 1370 KJ/Kg
Specific heat capacity at temperature

15 0C

at 1atm

 CP=2.19 KJ/Kg.0C

CV=1.673 KJ/Kg.0C

CP/CV=1.3096
Critical temperature 133.00C
Critical pressure 11425 K.Pa(a)
Solubility in water %47 vol.(gas)/Vol.(Water) at 0 0C and 1 atm
Explosion / ignition range in air corrosive gas

Compatibility with materials

Material Compatibility of Ammonia

 

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

 Viton® Buna-N Neoprene Polyurethane

O

Kalrez
GAS

 

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Safty

Dangerous products classification:

Dangerous Products Transport Information:

 

IATA IMDG DOT
UN 1005 UN 1005 UN 1005 UN NUMBER
Ammonia, anhydrous Ammonia, anhydrous Ammonia, anhydrous UN SHIPPING NAME
2.4 , 9.2 2.4 , 9.2 2.4 , 9.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

Neon

What is Neon?

  • Neon is a chemical element with the symbol Ne and the atomic number 10.
  • This element Can be found in nature as a colorless gas.
  • Electric discharge emits a reddish-neon color, which shows that why neon lamps have a wide range of advertising uses.
  • Neon has 40 times the cooling properties of liquid helium and 3 times the liquid hydrogen, and it’s also used in the refrigeration industry.
  • Although neon is an inert gas in many practical cases, in combination with fluorine in the laboratory, it produces interesting colored compounds.
  • The above action suggests that the neon compound exists naturally; However, the evidence says that this hypothesis may be true or may not be true.
  • Neon is a very dangerous and deadly gas.
  • This gas can cause severe suffocation.

Physical properties

Molecular Weight 20.183
steam pressure 100 K. Pa @ -246.15 0C
Gas density 0.83536 Kg/m3 @ 21.1 0C and 1 atm
Latent heat of vaporization at boiling point (triple point) 16.6 KJ/Kg
Special heat capacity CP=1.05 KJ/Kg.0C

CV=0.636 KJ/Kg.0C

CP/CV=1.64
Critical temperature -228.8 0C
Critical pressure 2654 KPa(a)
Solubility in water 0.0105 vol.(gas)/Vol.(Water) at 200C and 1 atm
Explosion / ignition range in air  Non-Flammable Gas

Compatibility with materials

Material Compatibility of Neon

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

 Viton® Buna-N Neoprene Polyurethane

O

Kalrez
GAS Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Safty

Dangerous Products classification:

Dangerous Products Transport Information:

(For refrigerated liquid)   :UN 1913

IATA IMDG DOT
UN 1065 UN 1065 UN 1065 UN NUMBER
Neon, compressed Neon, compressed Neon, compressed UN SHIPPING NAME
2.2 2.2 2.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

Sulfur hexafluoride

What is sulfur hexafluoride?

  • Sulfur hexafluoride is a colorless, odorless, non-toxic, non-flammable gas that has electrical insulation properties and acts as an insulator in electrical equipment.
  • SF6(Sulfur hexafluoride) At atmospheric pressure 1, can deform directly from the solid phase to the gaseous phase.
  • SF6 One of the most stable chemical compounds in the presence of many substances، It dissolves very little in water and oil and does not change pH.

Available grades:

%99.999-% 99.99 – %99.9

Tanks and maintenance:

  • SF6 can be charged and carried in cylinders and pressure vessels with working pressure more than 68 times.
  • The maximum charge weight of the cylinder is %120 of the weight of the cylinder water intake.

Compatible and incompatible materials:

  • SF6 In contrast with all metals is non-corrosive.
  • In the vicinity of the electrical discharge may decompose somewhat.
  • Some compounds resulting from the breakdown of SF6 molecules? , They Might be corrosive.
  • Corrosion caused by the breakdown of SF6 molecules may be due to the presence of moisture or high temperatures.
  • SF6 Decomposes very little in the presence of some special metals, This effect occurs in the presence of silicon and carbon steels.
  • Decomposition at high temperatures does not occur in the presence of aluminum, copper, brass, and silver.
  • Most washers used in SF6 systems Made of Teflon, neoprene, and natural latex

Physical properties

Molecular Weight 146.05
steam pressure 2156 K. Pa @ 21.1 0C
Gas density 6.17 Kg/m3 @ 20 0C and 1 atm
Latent heat of vaporization at temperature 200C  63.1 KJ/Kg
Special heat capacity CP=0.6790 KJ/Kg.0C

CV=0.6190 KJ/Kg.0C

CP/CV=1.097
Critical temperature 45.560C
Critical pressure 3753 KPa(a)
Solubility in water 0.001 vol.(gas)/Vol.(Water) at 25.0 0C and 1 atm
Explosion / ignition range in air  Non-Flammable Gas

Compatibility with materials

Material Compatibility of SULPHUR HEXAFLUORIDE

 

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

 Viton® Buna-N Neoprene Polyurethane

Updating

Kalrez
GAS Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating

 

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Safty

Dangerous Products classification:

Dangerous Products Transport Information:

 

IATA IMDG DOT
UN 1080
 UN 1080 UN 1080 UN NUMBER
SULPHUR HEXAFLUORIDE SULPHUR HEXAFLUORIDE SULPHUR HEXAFLUORIDE UN SHIPPING NAME
2.2 2.2 2.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

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