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Barrel blasting



Vibratory Finishing is a process that works on a chemical-mechanical basis to finish surfaces.  In the work bowl of a vibratory finishing machine, work pieces, media, water, and compound are put into motion by a vibratory drive system. This causes a constant relative movement of the media and the work pieces.  The interaction of water, compound, media and machine produces the required surface finish.  Our test centers can provide you with the optimum vibratory finishing solution for your needs.


Our comprehensive process knowledge combined with our broad equipment range, allows us to develop cost-effective and environmentally-friendly solutions to all kinds of finishing problems.

barral5  barral4

Vibratory finishing has been proven to be a particularly effective form of surface finishing. It now occupies an important place in the production process


•  Deburring
•  Degreasing and Oil Removal
•  Descaling / Cleaning
•  Smoothing / Brightening / Polishing
•  Radiusing
•  Grinding
•  Antiquing
•  Painting



Polishing Compound



Shot blasting

shot1    shot2    shot3

Shot blasting, or abrasive blasting, is an essential part of most steel mill, metal finishing and foundry operations and has been an established finishing technique since the late 1800’s. It is a mechanical method of propelling abrasive using a centrifugal wheel to remove surface contamination, scale and other impurities from the surface of steel applications, like structural steel including massive bridge girders and heavy construction equipment, large weldments, plate steel, bar and wire steel and foundry castings. In general, blasting prior to finishing serves three primary purposes: it cleans and descales surfaces, adds texture to enhance paint adhesion, and if done properly reduces maintenance costs by increasing coating life.



  • surface preparation prior to painting, bonding or other coating operations
  • removal of rust, scale, sand, or paint from fabricated components
  • roughening of industrial gas turbine engine component surfaces in preparation for thermal spray coating
  • removal of burrs or edge profiling machined components
  • providing a matte cosmetic surface finish on consumer products
  • removal of mold flash from plastic components
  • surface texturing of tooling, and molds to alter the appearance of molded or stamped products


shot5   shot6


Abrasive grit blasting, or sand blast cleaning, is a surface treatment process widely used in a variety of different industries with many diverse purposes. Abrasive blasting is the process by which an abrasive media is accelerated through a blasting nozzle by means of compressed air. The abrasive used varies based on the surface treatment required. Common abrasives used include:

  • Steel shot
  • Steel grit
  • Glass bead
  • Crushed glass
  • Aluminum oxide
  • Silicon carbide
  • Plastic
  • Walnut shell
  • Corn cob
  • Baking soda
  • Ceramic grit
  • Copper slag


Media selection is a crucial decision in the engineering of abrasive blasting processes. The different media types have different hardness, shape, and density, and each is available in a wide range of particle sizes. Many times it is necessary for sample processing to take place to lock in the final media type and size. The equipment used to perform the sand blasting process varies through industry; there are hand cabinets, dedicated automatic high production models, and completely robotic systems with closed loop process controls. The type of machine utilized depends on the surface treatment applied as well as the end use of the component.

Traditionally abrasive grit blasting has been considered a “low tech” process, generically called sand blasting. Today, however, abrasive blast cleaning is a vital process used not only to remove rust, but to prepare surfaces for high performance coatings or to treat final products to give them the luster and surface texture desired by the retail consumer.


Tungsten and W-Alloys



Atomic Symbol:  W

Atomic Number:  74

Melting Point:  3,420 °C, Density:  19.3g/cm3


Celestial Inter Supply co.,Ltd. is a  supplier Pure tungsten sheet, rod, bar stock and crucibles.

We prepare our tungsten to perform perfectly in its specific applications. We can determine the following properties through the addition of various alloys:

  • Physical properties (e.g. melting point, vapor pressure, density, electrical conductivity, thermal conductivity, thermal expansion, heat capacity, electron work function)
  • Mechanical properties (e.g. strength, fracture behavior, creep resistance, ductility)
  • Chemical properties (corrosion resistance, etch ability)
  • Workability (e.g. machining, formability, weld ability)



Atomic number 74
Atomic mass 183.85
Melting point 3 420 °C / 3 693 K
Boiling point 5 900 °C / 6 173 K
Atomic volume 1.59 · 10-29 [m3]
Vapor pressure at 1 800 °C 2 · 10-9 [Pa]
at 2 200 °C 6 · 10-6 [Pa]
Density at 20 °C (293 K) 19.3 [g/cm3]
Crystal structure body-centered cubic
Lattice constant 3.165 · 10-10 [m]
Hardness at 20 °C stress-relief annealed > 460 [HV30]
recrystallized ~ 360 [HV30]
Modulus of elasticity at 20 °C (293 K) 410 [GPa]
Poisson number 0.28
Coefficient of linear thermal expansion at 20 °C (293 K) 4.2 · 10-6 [m/(m·K)]
Thermal conductivity at 20 °C (293 K) 164 [W/(m·K)]
Specific heat at 20 °C (293 K) 0.13 [J/(g·K)]
Electrical conductivity at 20 °C (293 K) 18 · 106 [1/Ω·m)]
Specific electrical resistance at 20 °C (293 K) 0.050 [(Ω·mm2)/m]
Sound speed at 20 °C (293 K) Longitudinal wave 5 180 [m/s]
Transverse wave 2 870 [m/s]
Electron work function 4.54 [eV]
Capture cross-section for thermal neutrons 1.92 · 10-27 [m2]


Chemical Composition


Name of material Chemical composition (percentage by weight)
W (pure) > 99.97
WC WC20 2.0 % CeO2
WCu WCu10 10 – 40 % Cu
WL WL10 1.0 % La2O3
WL15 1.5 % La2O3
WL20 2.0 % La2O3
WT WT20 2.0 % ThO2
WVMT10 30 – 70 ppm K / 1.0 % ThO2
WVMWT 5 – 30 ppm K / 2.0 % ThO2
WRe WRe5 5.0 % Re
WRe26 26.0 % Re

w8               w9                                     W Sheet                                                                        W Rod

w12               w11
                        W Wire                                                                          WCu