Weapns MTX in Iraq

[sgmgrumpy]

Accession Number:
AD0639322


Citation Status:
ACTIVE

Title:
INORGANIC COATINGS FOR SPRING APPLICATIONS.

Fields and Groups :
110300 - COATINGS, COLORANTS AND FINISHES
130800 - MFG & INDUSTRIAL ENG & CONTROL OF PRODUCT SYS
190600 - GUNS


Corporate Author:
SPRINGFIELD ARMORY MASS

Personal Author(s):
LARiviere,A. H.
Pributsky,G.


Report Date:
30 JUN 1966

Media Count:
53 Pages(s)

Organization Type:
A - ARMY

Report Number(s):
SA-TR18-1094 (SATR181094)

DescriptiveNote:
Technical rept.

Project Number(s):
DA-M1-3-23043 (DAM1323043)

Descriptors:
*SMALL ARMS, COATINGS, SPRINGS, FATIGUE(MECHANICS), LIFE EXPECTANCY(SERVICE LIFE), INORGANIC COMPOUNDS, HYDROGEN EMBRITTLEMENT, ABRASIVE BLASTING, COLD WORKING, HELICAL SPRINGS, SURFACES.ZSMALL ARMS, COATINGS, SPRINGS, FATIGUE(MECHANICS), LIFE EXPECTANCY(SERVICE LIFE), INORGANIC COMPOUNDS, HYDROGEN EMBRITTLEMENT, ABRASIVE BLASTING, COLD WORKING, HELICAL SPRINGS, SURFACES.Z

Abstract:
Inorganic coatings and surface pretreatments (such as vaporblast, gritblast, and shot-peening processes) were investigated and evaluated to determine their effect on fatigue life of experimental helical springs used in small arms weapons systems. Surface pretreatment improves fatigue life of both coated and noncoated springs. The use of surface pretreatment such as shot-peening eliminates the necessity of baking to minimize hydrogen embrittlement effects. The shot-peening process not only provided the greatest improvement in fatigue life but also minimized the dydrogen embrittlement from the various coating processes. Test procedure is described and results discussed. (Author)

Distribution Limitation(s):
01 - APPROVED FOR PUBLIC RELEASE


Source Code:
331450

Document Location:
DTIC AND NTIS

Geopolitical Code:
2502

Citation Updated:
14 OCT 2005

http://stinet.dtic.mil/index.html

A study was made to evaluate the effects of various pretreatment processes and long-term storage on the magazine spring for the M14, 7.62mm, rifle. The various pretreatment processes considered in the study were: (1) stress-relieving only, (2) stress-relieving and cold-set, (3) stress-relieving and heat-set, and (4) heat-set only. The storage tests involved periods from 1 to 5 years and consisted of hot, cold, and normal temperature conditions. Test procedures are described and results discussed. (Author)

http://stinet.dtic.mil/stinet/jsp/do...28s%29&MC=&PE=