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Address: 6th Floor, Building 2, No. 615, Ningqiao Road, Jinqiao Economic Development Zone, Pudong New Area, Shanghai
Contact name:
Shanghai Yichen industrial co. LTD |
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BTH BOLTE Welding Studs for Capacitor Discharge Stud Welding
Threaded Knock-Off Studs
Threaded knock-off stud type PT M8 x 8 x 30 mm
Material: steel 4.8 suitable for welding
Surface: copper-plated
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Threaded knock-off studs and mounting disks | Grinding of welding points | Welding of the threaded knock-off studs through holes in the
corrosion protection boards |
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| Welded threaded knock-off stud after breaking off the stud shaft | |
Materials
Our welding studs are standardly made from the following materials:
| Materials | Production standards | Yields trength/point | Tensile strength | Elongation |
| Steel Strength class 4.8 | According to DIN EN ISO 898-1 | (Re)≥340N/mm2 | (Rm)≥420N/mm2 | (A5)≥14% |
| Stainless steel A2-50 | According to DIN EN ISO 3506-1 | (Rp0,2)≥210N/mm2 | (Rm)≥500N/mm2 | (AL)≥0,6d |
| Stainless steel1.4571 | According to DIN EN ISO 3506-1 | (Rp0,2)≥210N/mm2 | (Rm)≥500N/mm2 | (AL)≥0,6d |
| Aluminium AlMg3 | (Rm)≥100N/mm2 | |||
| Brass CuZn37 | (Rm)≥370N/mm2 |
| The materia lspecifications conform with DIN EN ISO 13918 and DIN
EN ISO 14555.Forwelding studs from other materials please send us
you rinquiry or contact us. On demand, the material properties can
be verified by an inspection document (test report,inspection
certificate) according to DIN EN 10204. We are pleased to inform
you about weldability to different base materials and welding
parameters. Dimensions Welding studs dimensions are given in the
measurement tables (all dimensions in mm).All standardised welding studs conform to DIN EN ISO 13918. Not standardised welding studs are supplied according to DIN EN ISO 13918. Special welding elements, which are not described, are delivered upon request. Dimensions that are not listed in the measurement tables are delivered upon request. Surface protection Standardly our welding studs made fro msteel 4.8 are supplied with an electrolytic copper plating of 4-8 µm (according to DIN EN ISO 4042) as corrosion protection.Other surface treatments are possible upon request. Threads The threads of the studs are cold rolled (tolerance limit 6g). For surface-treated studs the tolerance limit 6h can be reached. We deliver studs with special threads upon request. Stud flange Welding studs for capacitor discharge stud welding have a cold formed flange. The diameter oft he flange is always bigger than the external diameter of the welding element (see following drawings and measurement tables). The flange prevents the electric arc to flash over to the cylindrical part of the welding elemsent and increases the welding area. By this, a high strength of the stud welded joint is guaranteed. Upon request, it is possible to deliver welding studs with flange dimensions other than the ones listed and welding studs without flange. However, we can only recommend the limited use of welding studs without flange–depending on the welded joint requirements. Please contact us for this. Welding pip
Welding studs for capacitor discharge stud welding have a cold formed calibrated welding pip with length and diameter tolerances closely controlled. At the welding pip the welding process is initiated and it determines the length of the welding time.Therefore exact dimensions of the welding pip are decisive for proper welding results. |
