Torque strength

ASTM D3658-01 Standard practice for determining the torque strength of ultraviolet light-cured glass/metal adhesive joints. 

ASTM D1084-97 Standard test methods for viscosity of adhesive. 

ASTM D2556-93a (1997) Standard test method for apparent viscosity of adhesives having shear-rate-dependent flow properties. 

ASTM D3236-88 (1999) Standard test method for viscosity of hot melt adhesives and coating materials. 

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Screw conveyors are suited to transport of even sticky and abrasive soiids up inciines of 20° or so. They are iimited to distances of 150 ft or so because of shaft torque strength. A 12 in. dia conveyor can handie 1000-3000 cuft/hr, at speeds ranging from 40 to 60 rpm. 

D 3658 Test Method for Determining the Torque Strength of Ultraviolet (UV) light... 

Fatigue analysis Rohmert 1973a, b Laurig 1973 Joint torques, strength equations Suitable... 

Figure 2.1 Torque strength versus cure schedule for Loctite Chipbonder 3607 (strength measured on 1206 capacitors 22 °C per IPC SM-817). ...

In the United Kingdom the Ministry of Defence (MOD) has issued specifications DTD 5628-5633, which cover test procedures and performance requirements for a range of products. Five strength bands and four viscosities, from penetrating to thixotropic, are defined. The torque strengths are tested on M8 nuts and bolts and the shear strength in 12-mm pins and collars. The development of these specifications and the test procedures have been described by C. L. Brett at the MOD. The breakloose torque on nuts and bolts requires particular attention to a transient measurement where the first torsional motion is detected. Other products show somewhat different behavior, with no distinct breakloose, and the torque at which the sealant begins to yield is not easily detected [77]. British Standard BS 5292 relates to the use of anaerobic sealants on gas appliances. 

The International Organization for Standardization (ISO) has finalized an International Standard (ISO/DIS 10964 1993) Adhesives Anaerobic Adhesives— Determination of Torque Strength of Anaerobic Adhesives on Threaded Fasteners. This standard describes testing procedures for liquid and preapplied sealants using manual and graphical procedures. 

Strength reinforced plastic peel ply sandwich peel torque strength, puU. 

Torque strength ASTM E229-70(81) For determining pure shear... 

Modified rail test See Torque strength Disk shear in compression Bond strength in compressive shear... 

Anaerobic compositions and mechanical devices such as lock washers and lock nuts prevent relative movement of threaded parts in totally different ways. Any attempt to compare the performance and cost effectiveness of the two different systems on the basis of resistance to a removal torque is therefore both baseless and invidious. Particularly so since the quoted torque strength of various anaerobic materials is no more than a convenient method of ranking, not a measure of how they function. Even the weakest anaerobic adhesives can lock virtually all threaded assembly work - as shown in Table 2.3. 

Specific gravity, density Tensile strength Flexural strength Compressive strength Shear strength Torque strength Tensile modulus Flexural modulus Compressive modulus Bulk modulus Shear modulus... 

Torque strength using fiberglass nut lubricated with SAE 16W30 8 18 35 50 110... 

A simple pull-out or torque retention groove may prove to be sufficient for some applications. A flat surface on one or two sides of the insert may also provide sufficient torque strength. 

In Britain the Ministry of Defence specification DTD 5628-5633 covers test procedures and performance requirements for a range of products. Five strength bands and four viscosities fi om penetrating to thixotropic are defined. The torque strengths, including breakloose torque, are tested on M8 nuts and bolts and the shear strength in 12 mm pins and collars [201]. 

ISO 10964 (August 15, 1993) Adhesives—Anaerobic adhesives— Determination of torque strength of anaerobic adhesives on threaded fasteners describes testing procedures for liquid and preapplied sealants. 

Nylon properties that contribute to automotive applications include compressive, flexural, torque strength, toughness resistance to creep, fatigue, wear, oUs, grease, and underhood chemicals limitation of PV and NVH abatement. 

Part G1 1987 Determination of torque strength of anaerobic adhesives on threaded fasteners. 

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