Ballotini\u00ae Impact Beads<\/p>\n
There can be no doubt that Glass Beads are the world’s most popular air blasting media for cleaning and conditioning surfaces. The unique characteristic of glass sphere blasting is that surfaces are cleaned, deburred, decorated and “cold-worked”, without etching or removal of basic surface material and without imparting ferrous or other undesirable residues. In addition , the inherent strength of a glass sphere is such that it can survive multiple impacts, allowing for economies of continuous recycling. Consumption, or breakage of beads, averages only about 3% per cycle.<\/p>\n
Glass Bead Impact Media<\/strong> Typical Applications for Glass Bead Blasting<\/strong> <\/p><\/div> \u2022 \u00a0creates a wide range of unique surface finishes that are easy to reproduce Peening<\/strong> Deburring<\/strong> <\/p><\/div> \u2022 remove larger, tougher soils Small Beads<\/strong> All Beads<\/strong> Factors affecting final surface appearance as well as consumption rate include: shape of workpiece, hardness of workpiece, bead size, angle of nozzle, distance of nozzle from surface, air pressure, and type of delivery system (suction vs. pressure blast)<\/p>\n <\/p><\/div><\/p>\n \u2022 Size range – Minimum 80% by weight in range on smaller U.S. Sieve, Maximum of 10% by weight on larger U.S. Sieve. Tested in accordance with ASTM D 1214-58 and MIL Spec G-9954A Ballotini\u00ae Impact Beads There can be no doubt that Glass Beads are the world’s most popular air blasting media for cleaning and conditioning surfaces. The unique characteristic of glass sphere blasting is that surfaces are cleaned, deburred, decorated and “cold-worked”, without etching or removal of basic surface material and without imparting ferrous or other undesirable […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1401","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/smelko.com\/index.php?rest_route=\/wp\/v2\/pages\/1401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/smelko.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/smelko.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/smelko.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/smelko.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1401"}],"version-history":[{"count":16,"href":"http:\/\/smelko.com\/index.php?rest_route=\/wp\/v2\/pages\/1401\/revisions"}],"predecessor-version":[{"id":1925,"href":"http:\/\/smelko.com\/index.php?rest_route=\/wp\/v2\/pages\/1401\/revisions\/1925"}],"wp:attachment":[{"href":"http:\/\/smelko.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\u2022 are consumed at a slow rate and can survive multiple impacts, allowing for continuous recycling of the media.
\u2022 are chemically inert and will not leave ferrous or other undesirable residues on the surface of the workpiece
\u2022 impart a controlled, clean finish on a variety of metals
\u2022 \u00a0clean quickly without significant metal removal<\/p>\n
\u2022 \u00a0cleans and preps the surface of metal parts without changing tolerances , or imparting ferrous pollutants
\u2022 \u00a0combined cleaning, finishing and peening in one operation<\/p>\n
\n
\u2022 \u00a0blends machine marks, seals pores and the results offer the advantages of glass bead peening<\/p>\n
\n\u2022 \u00a0reduces the tensile stress in metal parts, increasing the fatigue limit
\u2022 \u00a0reduces stress corrosion cracking<\/p>\n
\u2022 \u00a0removes burrs without damaging the parts and offers a peened surface in one operation<\/p>\n
\n\u2022 \u00a0fewer impacts per pound
\n\u2022 clean slower
\n\u2022 peen to more intense levels
\n\u2022 can’t reach small areas
\n\u2022 \u00a0<\/strong>produce higher surface surface RMS or AA
\n\u2022 \u00a0peen to deeper zones in surfaces
\n\u2022 \u00a0reclaim\/seperation easy, up to one or two mm
\n\u2022 \u00a0consume faster at same pressure as small beads ( in practice may consume slower than small beads, as less pressure is required to accomplish work )
\n\u2022 as large as 4 mm in diameter<\/p>\n
\n\u2022 remove smaller, lighter soils
\n\u2022 more impacts per pound
\n\u2022 clean faster
\n\u2022 peen to less intense levels
\n\u2022 reach into keyways, fillets, small areas
\n\u2022 \u00a0Produce lower surface RMS or AA
\n\u2022 \u00a0peen outerzones of surfaces
\n\u2022 \u00a0reclaim\/separation easy, with care below 44 microns
\n\u2022 \u00a0produce more matte finish at same intensities as larger beads
\n\u2022 \u00a0consume slower at same pressure as large beads ( in practice may consume faster than \u00a0 \u00a0large beads, as more pressure is required to accomplish work )
\n\u2022 to 37 microns and finer diameter<\/p>\n
\n\u2022 peen to highest intensities at 90\u00b0 nozzle angle
\n\u2022\u00a0consume greatest at 90\u00b0 nozzle angle
\n\u2022 consume greater at highest blast pressures
\n\u2022 consume greater as workpiece hardness increases
\n\u2022 consume greater as nozzle approaches workpiece
\n\u2022 cleans less efficiently at 90\u00b0 nozzle angle, due to narrowing of blast pattern area and ‘blinding’ by rebounding beads
\n\u2022 are inert, contain no free silica ( not a silicoses hazard like silica sand ) and are easily and safely disposed of<\/p>\n
\n\u2022 Free Iron Content – Maximum 0.1% (one tenth of one percent) by weight
\n\u2022 Silica Content – Minimum 67% to assure chemical stability. Tested in accordance with ASTM #C 169-57T
\n\u2022\u00a0Specific Gravity – 2.45 – 2.55 gm\/c\u00b3
\n\u2022 Hardness – DPH 50g load – 540kg\/m\u00b2
\n\u2022 Colour – clear or crystal, free from surface films.
\n\u2022 Roundness – Minimum as listed for each size range specified. Determined in accordance with ASTM #1155 – 53 or MIL Spec. G9954A
\n\u2022 Broken or angular particles – maximum 3% by count. Tested in accordance with MIL Spec. G-9954A
\n\u2022 Air inclusions – not more than 10% of the beads shall show air inclusions of more than 25% of their area. Tested microscopically immersed in 1.5 refractive index fluid.
\n\u2022 Quality control lots – maximum size 2,000 pounds with lot numbers on each bag. Lot analysis records available upon request.
\n\u2022 Standard packaging – fifty pounds multi-wall paper bags with polyethylene barrier.
\n\u2022 Standard pallet – size 40″ x 40″ and contain 2,000 lbs.
\n<\/p><\/div>