US2394478A - Abrasive article and method of making - Google Patents
Abrasive article and method of making Download PDFInfo
- Publication number
- US2394478A US2394478A US51275343A US2394478A US 2394478 A US2394478 A US 2394478A US 51275343 A US51275343 A US 51275343A US 2394478 A US2394478 A US 2394478A
- Authority
- US
- United States
- Prior art keywords
- abrasive
- grinding
- articles
- making
- bonded abrasive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title description 11
- 238000000227 grinding Methods 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920001568 phenolic resin Polymers 0.000 description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 6
- 239000005011 phenolic resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920001084 poly(chloroprene) Polymers 0.000 description 5
- 229910021384 soft carbon Inorganic materials 0.000 description 5
- 229920001342 Bakelite® Polymers 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000004637 bakelite Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 230000003389 potentiating effect Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241001547070 Eriodes Species 0.000 description 2
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical compound C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 229910021385 hard carbon Inorganic materials 0.000 description 2
- PSGAAPLEWMOORI-PEINSRQWSA-N medroxyprogesterone acetate Chemical compound C([C@@]12C)CC(=O)C=C1[C@@H](C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@](OC(C)=O)(C(C)=O)CC[C@H]21 PSGAAPLEWMOORI-PEINSRQWSA-N 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Chemical compound CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 blanc iixe Chemical compound 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L sodium sulphate Substances [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/02—Wheels in one piece
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31692—Next to addition polymer from unsaturated monomers
- Y10T428/31696—Including polyene monomers [e.g., butadiene, etc.]
Definitions
- This invention relates to the manufacture of composite articles and to compositions forand methods of uniting or combining the components thereof, as well as the products resulting therefrom. It is especially adaptable and pertinent to the manufacture of bonded abrasive articles, and more particularly to the manufacture of composite abrasive articles.
- bended abrasive bodies provided with metallic or other external supporting means such as metal backhis plates or elements, or side plates secured to the list faces of the abrasive bodies
- the invention has been found particularly applicable to the making of disc-shaped grinding wheels adapted to be mounted for grinding with the flat side face of the wheel. Therefore. for the purposes of simplicity and clarity, the invention will be described mostly as it applies to the making of such disc wheels. It is to be understood. however, that the invention can be similarly employed more broadly for the manufacture of other composite articles in which the components are united by means of solid ti bond layers.
- abrasive articles such as the above-mentioned side-grinding discs having a rigid backing attached thereto
- the intervening layer of material herein referred to as the "tie bond or "tie bond layer”
- the intervening layer of material herein referred to as the "tie bond or "tie bond layer”
- Such supporting elements should also be secured by a means which will retain its strength at high temperatures and thus stand up under the heat generated during heavy duty grinding. It is further desirable that the material be resistant to water and the various hydrocarbon coolants used in wet a I a 2
- the above combination of properties has been approached in the past by attaching the supporting elementto the bonded abrasive body by means of an intermediate layer of natural or synthetic rubber of appreciable thickness, the latter being secured by means of one or more coatings of a liquid adhesive or cement applied to both the backing element and to the bonded abrasive body prior to combining the various parts of the article.
- the present invention provides such a means and method for combining the components of composite articles, as for example, securing rigid elements suchasbackingplatesandtbeliketo bonded abrasive bodies in which the preliminary application of liquid adhesives or cements to the surfaces to be combined is eliminated and at the sametimethetensilestrensthsoladhcslonhetween the intermediate tie bond layer, the rigid supportingelementandthehondedabrasivebody is as great as, and even greater.
- a rigid a supporting element is secured to a bonded abrasive body or in its broader aspects, the components of other composite articles of manufacture.
- thetiebondlayer isstronglyadherenttoboththe abrasive body and the supporting means, possesses the n resilience and elasticity to ooabsorbgrlndingshomandretslnsthegrcater partofitsstrengthandresilienesinthepresence ofeoolingagentsandallraliesaudtheseveretemperamresoftenpresentinwetanddrysrinding operations.
- Figure 2 is a sectional view taken along the line 11-11 of Figure l.
- the disc-shaped grinding wheel illustrated in Figures 1 and 2 consists of a bonded abrasive section 0 of any desired thickness and diameter. having a flat grinding face 8 and an opposite supportingfaoe 1'.
- Theabrasive section l is composed of abrasive grain such as crystalline aluminum oxide, silicon carbide. or other granular abrasive material of the desired grit size or sizes,
- the abrasive section I is provided with a steel backing plate I attached to the supporting face Ioftheabrasivesectlonlbymeansofanintermediatel yeroitiebonds.
- Thetiebond sissecuredtotheabrasivesectionlandmetal plate 8 with adequate strength of adhesion thereto without the application of any auxiliary adhesiveeoatingstothetiebondlayerortothe supporting face 1 of the abrasive section or the inner face ll 01' the steel plate prior to assembly.
- Thebackingplatel isprovidedwitha centerarborhole ii andthrcebolthoies II for fastening the backed wheel to a mounting plate on the grinding machine. (The mounting plate is not shown.)
- thetypeotbondusedintheabrasivesection results have been obtained with resin. vitrified, silicate and rubber-bonded
- the abrasive sections are methods of making bonded abrasive shapes.
- the desired degree of resilience, i. e., resistance to mechanical shock, of the wheel can be closely controlled.
- a satlsiactory tie bond composition for carrying out the present invention comprises polychloroprene and a phenolic resin of the phenol formaldehyde resinous condensation type properly compounded by the addition of substantial amounts or a filler such as soft carbon black, and the other customary compoundins ingredients such-as vulcanizing agents, antioxidants. stabilizers, plasticizers and the like. It has been found that imsatisfactory results the phenolic resin should be incorporated into the polychioroprene in the form of a liquidresin; a phenolic resin such as that sold by the Bakelite Corporation under the trade designation of liquid Bakelite resin No. BR 10190 has been found highly satisfactory.
- Another liquid phenolic resin suitable for use herein is vacuum liquid resin No. 925 A sold by the Var-cum Chemical Corp. 01 Niagara Falls, New York. Fillers which may be used to replace part or all of the soft carbon black include. for example,
- channel black or mineral fillers such as blanc iixe, natural whiting, Dixie clay and the like, although soft carbon black is the preferred filler and produces the best results.
- soft carbon black is the preferred filler and produces the best results.
- a part of the polychloroprene can be replaced by a natural or a reclaimed rubber.
- Neosone D phenyl-beta-naphtbylaminc
- hensothlasyl disulp Neosone D (phenyl-beta-naphthlamine)-- 1.0
- the present means and method of securing bonded abrasive bodies to rigid supports decreasesthecostoi'mountingbyareductionin labor, by a simplification of operations, and by a reduction in the amount of materials used. Too. the parts alter preparation do not require immediate bling. but can be stored for later assembly at the convenience of the operator and availability at Also, in curing the present articles, the temperature and pressure of cure can be varied considerably without the danger of overcuring and its resultant loss of strength.
- Abrasive wheels and discs of the present invention several beneficial and enhanced properties which extend their field oi usefulness.
- the present abrasive wheels have a long temperature range of serviceability extending from -30 to 300 Fahrenheit. Their retenoihighstrengthandresistaneetotheshocksof grinding and can endure severe operating conditime It is not intended that the invention should be limited to the particular embodiment of wheel illustrated, as like objects and advantages are obtained in various other abrasive articles where it is to secure bonded abrasive sections to metal or other rigid supporting or mounting means.
- l'orinstancasimilardiscwheelseanbe shsped side grinding abrasive wheels it is not to beconetruedasbeinglimitedthereto, lnits broaderaspectsitlsuseiulintheunltingorcombining of components of various other composite articles of manufacture.
- suitableforuseintheproductionoflaminatedprodacts such as in the manufacture oi laminated metalsheetsinwhichtwoormorelayersoia metal or an alloy 01' the same or different compositionsinsheeti'ormareunitedto provldeacomposite metallic sheet; or.
- the present invention is applicable to the formation of other laminated sheet products in which the various laminations may be the same or diflerent materials and may be fabric, wood such as in plywood, metal, or ceramic in nature.
- the invention can be adapted for the combining or various elements oi. composite articles such as the attachment of the backing or supporting elements, mountings. handles and the like to the functional elements oi the products to provide the desired iinal articles.
- a bonded abrasive article having a supporting element and a bonded abrasive body.
- the supporting element thereof being secured to the bonded abrasive body by a tie bond layer containing as an essential ingredient a substantial proportion of a mixture of polychloroprene and aphenolicresin,the roportionoiphenoiicresin tionofmechanicalstrens i s ll I being 140% basedonthepolychloroprene.
Description
Feb. 5, 1946. J PREN'HCE 2,394,478
ABRASIVE ARTICLE AND METHOD OF MAKING Filed Dec. 3, 1943 INVENTOR. MA/E514. PEtW 7705 EETI'ORNEY. I
PM Feb. s, 1946 UNITED STATES snassrvn ARTICLE AND METHOD OI BAKING 'l'heflarborundum company, Niagara Falls,
N. Ysaoorporationofbelawaro DcoanberSJMBsrIaIRoJIZ-HS C(lhlms.
This invention relates to the manufacture of composite articles and to compositions forand methods of uniting or combining the components thereof, as well as the products resulting therefrom. It is especially adaptable and pertinent to the manufacture of bonded abrasive articles, and more particularly to the manufacture of composite abrasive articles. as for example, bended abrasive bodies provided with metallic or other external supporting means such as metal backhis plates or elements, or side plates secured to the list faces of the abrasive bodies The invention has been found particularly applicable to the making of disc-shaped grinding wheels adapted to be mounted for grinding with the flat side face of the wheel. Therefore. for the purposes of simplicity and clarity, the invention will be described mostly as it applies to the making of such disc wheels. It is to be understood. however, that the invention can be similarly employed more broadly for the manufacture of other composite articles in which the components are united by means of solid ti bond layers.
In the manufacture of abrasive articles. such as the above-mentioned side-grinding discs having a rigid backing attached thereto, it is essential not only that the bonded abrasive body be secured to the supporting element with sul'licient tenacity to withstand the high stresses and strains to which it is subjected in grinding operations but it is also desirable, if not even essential, that the intervening layer of material, herein referred to as the "tie bond or "tie bond layer," be of sumcient thickness and elasticity or resilience to absorb or dampen the mechanical shocks of s'rinding instead of transmitting them to the backing and thence to the machine upon which the abrasive article is mounted or to the operator. Such supporting elements should also be secured by a means which will retain its strength at high temperatures and thus stand up under the heat generated during heavy duty grinding. It is further desirable that the material be resistant to water and the various hydrocarbon coolants used in wet a I a 2 The above combination of properties has been approached in the past by attaching the supporting elementto the bonded abrasive body by means of an intermediate layer of natural or synthetic rubber of appreciable thickness, the latter being secured by means of one or more coatings of a liquid adhesive or cement applied to both the backing element and to the bonded abrasive body prior to combining the various parts of the article. It has been found necessary to use a iiuuidad- 311% with all substagces heretofore zmlpioyed as intermediate ln ns layer in er to obtain a or a hesi n or the combining layer to the abrasive body and to the fthaslongbeenthedeslr i m which unite two surfaces by means of an intermediate layer of resilient material. as for example theattachmcntofa l backlngplatetothe side face of a bonded abrasive grinding wheel, to accomplish an adequately high strength oi union without the use of auxiliary adhesives or cements. The wide variety of cements marketed for such adhesive purp ses is indicative of their widespread use in this type of application where hlshadhcsionstrensthsare. Theideal way. heretofore unattained, of promoting high tensile strengths of adhesion would be to have a tie bond of such composition as to provide the desired adhesive qualities by reason of the ingredients contained therein so that the use of auxiliary cementing adhesives could be avoided.
The present invention provides such a means and method for combining the components of composite articles, as for example, securing rigid elementssuchasbackingplatesandtbeliketo bonded abrasive bodies in which the preliminary application of liquid adhesives or cements to the surfaces to be combined is eliminated and at the sametimethetensilestrensthsoladhcslonhetween the intermediate tie bond layer, the rigid supportingelementandthehondedabrasivebody is as great as, and even greater. than those obtained by the methods heretofore used which included, as an essential step, the application of liquid adhesives and cements for the purpose oi In accordance with the invention a rigid a supporting element is secured to a bonded abrasive body or in its broader aspects, the components of other composite articles of manufacture. are
secured. by means of an intermediate bonding.
' 50 to be combined without the application of liquid adhesives or cements to the combining surfaces or to the tie bond material, and without requiring any other preparation of the combining surfaces other than that required to put the surfaces semacleancondition. Whensocomposedandap-' plied in accordance with the present invention thetiebondlayerisstronglyadherenttoboththe abrasive body and the supporting means, possesses the n resilience and elasticity to ooabsorbgrlndingshomandretslnsthegrcater partofitsstrengthandresilienesinthepresence ofeoolingagentsandallraliesaudtheseveretemperamresoftenpresentinwetanddrysrinding operations.
In the drawing, which illustrates one embodiment of the invention:
l'igurelrepresentsafrontplanviewofadiscshaped grinding wheel embodying the present invention: and
Figure 2 is a sectional view taken along the line 11-11 of Figure l.
The disc-shaped grinding wheel illustrated in Figures 1 and 2 consists of a bonded abrasive section 0 of any desired thickness and diameter. having a flat grinding face 8 and an opposite supportingfaoe 1'. Theabrasive section lis composed of abrasive grain such as crystalline aluminum oxide, silicon carbide. or other granular abrasive material of the desired grit size or sizes,
suitably bonded. The bond may be'a vitrified oeramicmaterial, or it may be a silicate, or a resin or a natural or synthetic rubber compound. Asasupporttoprovideameansformounting, the abrasive section I is provided with a steel backing plate I attached to the supporting face Ioftheabrasivesectlonlbymeansofanintermediatel yeroitiebonds. Thetiebond sissecuredtotheabrasivesectionlandmetal plate 8 with adequate strength of adhesion thereto without the application of any auxiliary adhesiveeoatingstothetiebondlayerortothe supporting face 1 of the abrasive section or the inner face ll 01' the steel plate prior to assembly. Thebackingplatelisprovidedwitha centerarborhole ii andthrcebolthoies II for fastening the backed wheel to a mounting plate on the grinding machine. (The mounting plate is not shown.)
As the above description and drawings show.
thetypeotbondusedintheabrasivesection: results have been obtained with resin. vitrified, silicate and rubber-bonded The abrasive sections are methods of making bonded abrasive shapes. The abrasive section of the specific wheel illusresilient material in the form 0! a thin sheet approximately s r" to ss" in thickness. although the thickness may vary somewhat from these figures. By selection of the proper composition and thickness of this intermediate layer. the desired degree of resilience, i. e., resistance to mechanical shock, of the wheel can be closely controlled. A satlsiactory tie bond composition for carrying out the present invention comprises polychloroprene and a phenolic resin of the phenol formaldehyde resinous condensation type properly compounded by the addition of substantial amounts or a filler such as soft carbon black, and the other customary compoundins ingredients such-as vulcanizing agents, antioxidants. stabilizers, plasticizers and the like. It has been found that imsatisfactory results the phenolic resin should be incorporated into the polychioroprene in the form of a liquidresin; a phenolic resin such as that sold by the Bakelite Corporation under the trade designation of liquid Bakelite resin No. BR 10190 has been found highly satisfactory. Another liquid phenolic resin suitable for use herein is vacuum liquid resin No. 925 A sold by the Var-cum Chemical Corp. 01 Niagara Falls, New York. Fillers which may be used to replace part or all of the soft carbon black include. for example,
channel black or mineral fillers such as blanc iixe, natural whiting, Dixie clay and the like, although soft carbon black is the preferred filler and produces the best results. Also, a part of the polychloroprene can be replaced by a natural or a reclaimed rubber.
A tie bond material comprising mlyohloroprene andaliquid phenolicresin.whichishighlysatisfactory iortheprescntpurposesismadeofthe following ingredients compounded and sheeted tothe desired thickness on aroiimill.
Parts by weight Polychloroprene 100.0 liquid phenolic resin (Bakelite BR 10100) 5.0 Soft carbon black. 100.0 Hard carbon black 50.0 Light melnad u in (.6 zinc oxide 5.0
Neosone D (phenyl-beta-naphtbylaminc)- Stearic acid Sulphur .60 Ciroo (light process) 011.................... 5.0
Partl tweisht Polychloroprene 100.0 Liquid phenolioresin (Bakelite BR 10100)-.. 20.0 Soft carbon black 150.0 Extra light calcined magnesia 4.0 Zine oxide 2.0 Sulphur 0.5 Alta: hide) 1.0
hensothlasyl disulp Neosone D (phenyl-beta-naphthlamine)-- 1.0
Anotheresampleofatiebendeom position tiebondeonshtaofalayarolmpliable. 'llembodyingtheprosentinvsntionandwhichhas were 8 bemioundsetlsiaetoryinuleistba'tgiven reeulte'inaainereeeedtaeterotmietystnor below. mal aerating speeds and also permits at higher 1 w Partebyweight speeds at operation when dedrebie. Abe by e 100.0 reason oi the high heat M or the tie isquidphenolicreeinivareum #0254)--- 8.0 I bendmsterlshmuchclthehesteeneratedin 80ft carbon blaok.---- 100.0 the'abreeive section during use is quickly can- Hard carbon bieek..-------------------- 50b dusted through the tie bond layer to the rigid light camped magneeis.............. 4.0 support, where it h more easily dissipated by zinc oxide 5.0 rediatiomthueremovingmuehoithedangsroi Reasons D (phenyl-beta-naphthylamine)- 1.0 l0 localised build-up oi heat in the abradve por- Btearlcacid l.0 flons with its consequent increase in etrenes Sulphur .5 which tendte break the wheel. i mm mfir m t an Afteratiebondeompositionsuehaeoneoi m lsergymfeaturevmichis lyimpcrtsntin mammmmmmnmmm" grindingwheelswhichintheproeeeeoigrinding square inch, and usually 150 pounds per square inch, at a temperature or 275425 1'. usually at about 300' 1''. Thirty minutes is usually suihcient toadequatelvcurethetiebond. Forbestresuits, the tie bond should be cured always under a pressure and temperature 'suiilcient to cause it toextrudesliuhtlyattheedgesirombetweenthe backing plate and the abrasive body.
The development of a means and method for attachingbondedabrasivebodiestorigidsuporting elements, such as the mounting of disc side-grinding wheels on metal backing pistes without the use of an auxiliary cementing adhesive as provided by the herein-described invention is a distinct advance in the manuiacture of articles of this type. The elimination of cementing removes the variables of cements and their application, which are a potential source of error unless properly supervised at all times. Any which reduces man hours is highly desirable, when the quality of the ilnal product is not only maintained but even improved, as is the case with the present invention. The present means and method of securing bonded abrasive bodies to rigid supports decreasesthecostoi'mountingbyareductionin labor, by a simplification of operations, and by a reduction in the amount of materials used. Too. the parts alter preparation do not require immediate bling. but can be stored for later assembly at the convenience of the operator and availability at Also, in curing the present articles, the temperature and pressure of cure can be varied considerably without the danger of overcuring and its resultant loss of strength. These and other features lead to economics of manufacture not heretofore attainable.
Abrasive wheels and discs of the present invention several beneficial and enhanced properties which extend their field oi usefulness. For example, the present abrasive wheels have a long temperature range of serviceability extending from -30 to 300 Fahrenheit. Their retenoihighstrengthandresistaneetotheshocksof grinding and can endure severe operating conditime It is not intended that the invention should be limited to the particular embodiment of wheel illustrated, as like objects and advantages are obtained in various other abrasive articles where it is to secure bonded abrasive sections to metal or other rigid supporting or mounting means. l'orinstancasimilardiscwheelseanbe shsped side grinding abrasive wheels, it is not to beconetruedasbeinglimitedthereto, lnits broaderaspectsitlsuseiulintheunltingorcombining of components of various other composite articles of manufacture. For example, itis suitableforuseintheproductionoflaminatedprodacts such as in the manufacture oi laminated metalsheetsinwhichtwoormorelayersoia metal or an alloy 01' the same or different compositionsinsheeti'ormareunitedto provldeacomposite metallic sheet; or. similarly, the present invention is applicable to the formation of other laminated sheet products in which the various laminations may be the same or diflerent materials and may be fabric, wood such as in plywood, metal, or ceramic in nature. Also, the invention can be adapted for the combining or various elements oi. composite articles such as the attachment of the backing or supporting elements, mountings. handles and the like to the functional elements oi the products to provide the desired iinal articles.
Having described the invention full it is desired to claim:
1. A bonded abrasive article having a supporting element and a bonded abrasive body. the supporting element thereof being secured to the bonded abrasive body by a tie bond layer containing as an essential ingredient a substantial proportion of a mixture of polychloroprene and aphenolicresin,the roportionoiphenoiicresin tionofmechanicalstrens i s ll I being 140% basedonthepolychloroprene.
4 amen llhlnommh flflllfllldnmcouleltooodberewithtenocltytotheboudod pol-Hammad thereto. onsfllontflo obrsuvebodyondthemportlnonloto. hondhstusnthommotlnomeomondthe mAmethodotsecurin srkidmppou-nng shrsd vobodyoonhlnlnluonoslmflollnlredlontosuhssontislmportlonolomlxtureot 8 oommoelnoertincosheetotunmiosmssdflo oudophmololoehydorelln. boudmotu-lsloonstsflnzcslmflolly l'mly- Certificate of Correction Potent No. 2,394,478. February 5; 1946.
JAMES A. PRENTICE It is hereby certified that errors appear in the printed specification of the above numbered potent requiring correction as follows: Page 2, second column lines 23-24, for the word "Vocuum read Vorcum; page 4, first column, line 6, 2, after resin strike out the eriod and insert instead the profirtian g phenolic main time said 1-809'booedonlln oyohloroprmusndthot tters otentshouldbe withaieseoorrectiol is therein thotizhe some moyconformfiothereoordofthecose in the Patent Oflice.
signedmdlesledthislstdoyofootobmLD. 1946.
LESLIE manna-woman 4 amen llhlnommh flflllfllldnmcouleltooodberewithtenocltytotheboudod pol-Hammad thereto. onsfllontflo obrsuvebodyondthemportlnonloto. hondhstusnthommotlnomeomondthe mAmethodotsecurin srkidmppou-nng shrsd vobodyoonhlnlnluonoslmflollnlredlontosuhssontislmportlonolomlxtureot 8 oommoelnoertincosheetotunmiosmssdflo oudophmololoehydorelln. boudmotu-lsloonstsflnzcslmflolly l'mly- Certificate of Correction Potent No. 2,394,478. February 5; 1946.
JAMES A. PRENTICE It is hereby certified that errors appear in the printed specification of the above numbered potent requiring correction as follows: Page 2, second column lines 23-24, for the word "Vocuum read Vorcum; page 4, first column, line 6, 2, after resin strike out the eriod and insert instead the profirtian g phenolic main time said 1-809'booedonlln oyohloroprmusndthot tters otentshouldbe withaieseoorrectiol is therein thotizhe some moyconformfiothereoordofthecose in the Patent Oflice.
signedmdlesledthislstdoyofootobmLD. 1946.
LESLIE manna-woman
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51275343 US2394478A (en) | 1943-12-03 | 1943-12-03 | Abrasive article and method of making |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51275343 US2394478A (en) | 1943-12-03 | 1943-12-03 | Abrasive article and method of making |
Publications (1)
Publication Number | Publication Date |
---|---|
US2394478A true US2394478A (en) | 1946-02-05 |
Family
ID=24040406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US51275343 Expired - Lifetime US2394478A (en) | 1943-12-03 | 1943-12-03 | Abrasive article and method of making |
Country Status (1)
Country | Link |
---|---|
US (1) | US2394478A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2557047A (en) * | 1947-05-27 | 1951-06-12 | Carborundum Co | Composite abrasive article |
US2581926A (en) * | 1946-10-18 | 1952-01-08 | Firestone Tire & Rubber Co | Friction elements |
US2631961A (en) * | 1947-01-24 | 1953-03-17 | Gen Motors Corp | Method of bonding brake linings to brake shoes |
US2658015A (en) * | 1951-08-15 | 1953-11-03 | Us Rubber Co | Protected wood structure and method of making same |
US2915893A (en) * | 1953-03-27 | 1959-12-08 | Kaiser Aluminium Chem Corp | Metal clad refractory brick |
DE2634154A1 (en) * | 1976-04-13 | 1977-10-27 | Diamant Boart Sa | Low pitch saw tooth sharpener - has thin steel disc with diamond edge lining |
-
1943
- 1943-12-03 US US51275343 patent/US2394478A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2581926A (en) * | 1946-10-18 | 1952-01-08 | Firestone Tire & Rubber Co | Friction elements |
US2631961A (en) * | 1947-01-24 | 1953-03-17 | Gen Motors Corp | Method of bonding brake linings to brake shoes |
US2557047A (en) * | 1947-05-27 | 1951-06-12 | Carborundum Co | Composite abrasive article |
US2658015A (en) * | 1951-08-15 | 1953-11-03 | Us Rubber Co | Protected wood structure and method of making same |
US2915893A (en) * | 1953-03-27 | 1959-12-08 | Kaiser Aluminium Chem Corp | Metal clad refractory brick |
DE2634154A1 (en) * | 1976-04-13 | 1977-10-27 | Diamant Boart Sa | Low pitch saw tooth sharpener - has thin steel disc with diamond edge lining |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2986455A (en) | Bonded abrasive articles | |
US2398890A (en) | Reinforced abrasive article and method of making same | |
US3471276A (en) | Peripheral abrasive wheels with composite rims | |
US3175894A (en) | Mixture of fused alumina and fused zirconia granules in bonded abrasive articles | |
EP0565778B1 (en) | Abrasive composition comprising a superabrasive material and its use | |
US2552485A (en) | Abrasive tool comprising bonded abrasive element cemented to supporting element | |
US2394478A (en) | Abrasive article and method of making | |
JP2019520222A (en) | Curable composition, abrasive article and method for producing the same | |
US2065941A (en) | Mounted grinding wheel | |
US2349365A (en) | Flexible abrasive article | |
US2162600A (en) | Filler for abrasive articles | |
US2065942A (en) | Grinding wheel | |
US2479078A (en) | Diamond abrasive wheel | |
US2353864A (en) | Reinforced abrasive article | |
US2684351A (en) | Composition of matter comprising polyvinyl acetal resin, butadieneacrylonitrile rubbery copolymer, thermosetting normally liquid phenolic resin, and thermosetting normally solid phenolic resin | |
US2468056A (en) | Abrasive articles and method of manufacturing the same | |
US2173833A (en) | Abrasive article and its manufacture | |
US2187743A (en) | Granular coated article | |
US4184854A (en) | Magnetic cores for diamond or cubic boron nitride grinding wheels | |
US2418883A (en) | Anchoring means for abrasive disks | |
US2734813A (en) | Abrasive article | |
US2164476A (en) | Method of making abrasive articles by means of precoated grain | |
US2084513A (en) | Abrasive article | |
US2566828A (en) | Ceramically bonded diamond abrasive products | |
JPS6125776A (en) | Grinding disc |