FORD SD4-1988 HELMETS - WELDERS HELMET AND HAND SHIELD《头盔 焊工帽和手持式护面罩》.pdf

1、 Manufacturing StandardsFord Motor Company198807 HELMETS - WELDERS HELMET AND SD4HAND SHIELDEngineering Standards & Printed copies are uncontrolled.Systems Engineering (ESSE) Page 1 of 21. SCOPE: This specification covers welding helmets and hand shieldsdesigned to protect the wearer from direct inj

2、ury from temperatureextremes, welding sparks and infrared and ultraviolet light hazards.Standard NumbersHelmet Hand Shield Sweat Clear Clear Filter Filter FilterLess Less Band Cover Cover Glass Glass-A ShadeGlass Glass Optional Glass PlasticSD4-400 SD4-400 SD4-401 SD4-409 SD4-490A 9SD4-4100 SD4-40 S

3、D4-410 SD4-410A 10SD4-400A SD4-400A SD4-401A SD4-411 SD4-411A 11SD4-412 SD4-412A 12SD4-414 SD4-414A 142. MATERIAL: The helmet body shell shall be fiber glass reinforced plasticor thermoplastic with characteristics suitable for production weldingconditions. All material shall be a nonconductor of hea

4、t andelectricity. The cover plate shall be slow burning plastic to protectthe filter plates from damage. All materials used in helmets shall becapable of withstanding repeated sterilization.3. CONSTRUCTION:3.1 The shell body shall be firmly pivoted to an adjustable headgear insuch a manner as to per

5、mit raising from the face to inoperativeposition without removing. Body to be equipped with glass holder,which is to provide a simple, efficient and practicable method ofinserting and replacing standard cover and filter glasses.Stationary glass holders shall be either an integral part of themolded s

6、hell or a lightweight sturdy metal material added to theshell.3.2 Lift-front glassholders shall consist of the body molded as anintegral part of the shell with a lightweight sturdy metal lid. Theliftable lid shall telescope within the molded body when closed toprovide a positive seal. The hinge mech

7、anism shall hold the lid inthe fully open or closed position but shall not catch or bind in apartially open or closed position. The headgear may be fitted witha removable and replaceable sweatband covering at least the foreheadportion of the headband.3.3 Hand shield shall be furnished with a handle

8、in place of headgear.3.4 All interior parts shall have permanent nonreflecting finish and theentire construction shall be free from light leaks. Helmet or handshield shall be free of sharp or rough edges.Manufacturing StandardsFord Motor Company198807 HELMETS - WELDERS HELMET AND SD4HAND SHIELDEngin

9、eering Standards & Printed copies are uncontrolled.Systems Engineering (ESSE) Page 2 of 24. SIZE:4.1 BODY: Shell shall be so shaped as to protect the face and top ofhead to back of ears, the neck and underside of chin.SD4-400 Clear Cover Glass - 2mm x 50.8mm x 108mm -(.079 in x 2 in x 41/4 in)SD4-40

10、1 Clear Cover Plastic - 2mm x 50.8mm x 108mm(.079 in x 2 in x4-1/4 in)SD4-400A Clear Cover Glass - 2mm x 114.3mm x 133.4mm(.079 in x 4-1/4in x 5-1/4 in)SD4-401A Clear Cover Plastic - 2mm x 114.3mm x 133.4mm(.079 in x 4-1/2in x 5-1/4 in)4.2 FILTER GLASS: 2mm (minimum) x 50.8mm x 108mm(.079 in. x 2 in

11、. x 4-1/2 in.)or 2mm (minimum) x 114.3mm x 133.4mm(.079 in. x 4-1/2 in.x 5-1/4 in.)4.3 WEIGHT: 793 grams (28 ounces) maximum completeNOTE: The actual use of the helmet shall be specified by the SafetyUnit.Unless otherwise specified, this helmet shall meet the current ANSIStandard Z87.1 latest date.5

12、. SUPPLIERS RESPONSIBILITY: All material supplied to this standardmust be equivalent in all characteristics to the material upon whichapproval was originally granted, and shall be satisfactory for theintended application.6. APPROVAL OF NEW SUPPLIERS:6.1 Pricing of helmets from proposed new suppliers

13、 should be determinedto be cost competitive by Purchasing and Supply Staff prior toobtaining laboratory and shop trial approvals. After the producthas been determined to be cost competitive, gloves submitted by newmanufacturers to this standard and concluded to be cost competitivemust have laborator

14、y and shop trial approvals. Recommendations forthe addition of new manufacturers to the Manufacturing ApprovedSource List (ASL) must be made by the appropriate division standardsactivity in writing to the Plant Engineering Office, ManufacturingStaff. All supporting data must accompany the written request.6.2 The Plant Engineering Office, Manufacturing Staff, and theEnvironmental Health and Safety Manager, Employee Relations Staff,will review requests to determine approval.