SOYER Stud Welder BMK-16i
Stud Welder BMK-16i
Manufacturer: SOYER







Video Demo:
Nut Welding:
SOYER Short-cycle Drawn Arc Inverter Stud Welder BMK-16i
This stud welder is a universal inverter source providing optimum user convenience.
It is ideally suited for different welding procedures such as stud welding, electrode welding and TIG welding.
1. Welding time and preweld current time variably adjustable
2. High clock frequency of 30 kHz
3. Integrated inert gas operation mode variably adjustable
4. Low connected load and low weight
5. Constant current controller (current fluctuation control)
6. Option for semi-automatic and fully automatic stud feed
7. Interface for signal interchange with other external control systems
8. Self-protecting device in case of excess temperature or excessive welding sequence
9. Computer check on operability and simulated program run of all setting parameters on stud welder and gun without welding current
10. Table at the front panel showing standard values for all common stud types and diameters
metalworking machines
Technical Specification:
Welding range | M3 – M16 RD or 2 – 13 mm in diameter |
---|---|
Material | Steel, stainless steel, heat-resistant steel (Al and brass depending on respective requirements) |
Welding current | 100 – 1000 A, adjustable and regulated with stud welding, 40 – 300 A, adjustable with electrode welding, 40 – 100 A with TIG welding |
Welding time | 3 – 1000 ms with stud welding |
Welding sequence | Ø 6 mm up to 30 studs/min | Ø 13 mm up to 3 studs/min |
Mains supply | 3 x 400 V, 50/60 Hz, 32 AT, other voltage on request |
Dimensions | 335 x 440 x 700 mm (w x h x d) |
Weight | 36.5 kg |
What Is Stud Welding?
Stud welding allows metal fasteners such as weld studs, weld pins and tapped studs, to be welded onto another metal object using an arc at lightning speed. An arc is produced between the end of the stud and the surface of the workpiece, melting both parts. The stud is then forged into the molten pool. The material solidifies and the stud is welded. The weld is uniform and has complete fusion across the flange. As the whole surface of the weld stud is joined with the workpiece, the resulting weld joint is stronger than the stud or parent material.
Since no holes are punched in the sheet, the workpiece is not weakened and corrosion problems are minimized. When welding the stud, access is only required from one side which means that component handling is considerably facilitated, especially as regards establishing an earth connection.
This absolutely leakproof, hole-free and decorative joining technique is used in many everyday objects and facilitates their handling. Be it coffee machines, cooking pots, flat irons, steam cookers or even in vehicles and roofing – many things would be impossible without stud welding.
With the development of the patented “SRM Technology®” procedure (patent no. 10 2004 051 389) it has even been possible to replace many areas of glueing, riveting, punching and drilling.
Advantages:
1. Wide range of use from Ø 2 mm up to Ø 25 mm
2. Complete fusion, hence high strength
3. Weldable even on thin sheet metal
4. No or only very little reverse marking
5. No changes in material such as deformation or distortion
6. No drill holes required, hence no leaking
7. Corrosion problems can be minimized
8. Access to parts only required from one side
9. Various material combinations possible
10. No time and cost consuming preparatory and finishing works necessary
11. Fast and easy operation ensure high productivity
12. Can be easily automated with standard weld studs
Details Of Drawn Arc Stud Welding
With Ceramic Ferrule Or Shielding Gas
Drawn arc stud welding is a welding procedure for maximum loads. It enables welding of weld fasteners measuring between 6 mm and 25 mm in diameter. The entire welding process is controlled and monitored by an electronic power source.
This procedure creates high-quality welded connections and has proven invaluable in steel construction, mechanical engineering, shipbuilding, construction of prefabricated parts made from reinforced concrete, door and window construction, structural and civil engineering, fixture and pipeline construction.

The stud tip is placed into contact with the workpiece.

The stud lifts to a pre-set height. The arc is ignited.

The stud is immersed in the weld pool. The material solidifies and the stud is permanently welded.
Details Of SRM Stud Welding
With A Rotating Magnetic Field
The patented stud welding process in the radial symmetrical magnetic field (patent no.: 10 2004 051 389) in conjunction with the innovative HZ-1 universal weld stud featuring a plane end face and centering tip enables the safe and clean welding of weld studs up to M16. In this process, the use of ceramic rings is no longer needed.
This procedure opens up whole new possibilities especially in automated stud welding plants and large-scale component production.

The stud is placed into contact with the workpiece and is raised. The arc is triggered.

Arc is guided in a spiral through the magnetic field and melts both join parts on their entire surface.

The stud is immersed in the very flat penetration zone and is inseparably connected.


Threaded Capacitor Discharge (CD) Weld Studs (Type PT)
Copper-Plated Steel 4.8
M3 x 6 | M4 x 6 | M5 x 8 | M6 x 8 | M8 x 10 |
M3 x 8 | M4 x 8 | M5 x 10 | M6 x 10 | M8 x 12 |
M3 x 10 | M4 x 10 | M5 x 12 | M6 x 12 | M8 x 15 |
M3 x 12 | M4 x 12 | M5 x 15 | M6 x 15 | M8 x 16 |
M3 x 15 | M4 x 15 | M5 x 16 | M6 x 16 | M8 x 20 |
M3 x 16 | M4 x 16 | M5 x 20 | M6 x 20 | M8 x 25 |
M3 x 20 | M4 x 20 | M5 x 25 | M6 x 25 | M8 x 30 |
M3 x 25 | M4 x 25 | M5 x 30 | M6 x 30 | M8 x 35 |
M3 x 30 | M4 x 30 | M5 x 35 | M6 x 35 | M8 x 40 |
M4 x 35 | M5 x 40 | M6 x 40 | M8 x 45 | |
M4 x 40 | M5 x 45 | M6 x 45 | M8 x 50 | |
M6 x 50 | M8 x 55 | |||
M6 x 55 | M8 x 60 |
Stainless Steel A2-50 (V2A)
M3 x 6 | M4 x 6 | M5 x 8 | M6 x 10 | M8 x 10 |
M3 x 8 | M4 x 8 | M5 x 10 | M6 x 12 | M8 x 12 |
M3 x 10 | M4 x 10 | M5 x 12 | M6 x 15 | M8 x 15 |
M3 x 12 | M4 x 12 | M5 x 15 | M6 x 16 | M8 x 16 |
M3 x 15 | M4 x 15 | M5 x 16 | M6 x 20 | M8 x 20 |
M3 x 16 | M4 x 16 | M5 x 20 | M6 x 25 | M8 x 25 |
M3 x 20 | M4 x 20 | M5 x 25 | M6 x 30 | M8 x 30 |
M3 x 25 | M4 x 25 | M5 x 30 | M6 x 35 | |
M3 x 30 | M4 x 30 | M5 x 35 | M6 x 40 | |
M4 x 35 | M5 x 40 | M6 x 45 | ||
M4 x 40 | M5 x 45 | M6 x 50 | ||
M6 x 55 |
AIMg3 Aluminium
M3 x 6 | M4 x 6 | M5 x 8 | M6 x 8 | M8 x 10 |
M3 x 8 | M4 x 8 | M5 x 10 | M6 x 10 | M8 x 12 |
M3 x 10 | M4 x 10 | M5 x 12 | M6 x 12 | M8 x 15 |
M3 x 12 | M4 x 12 | M5 x 15 | M6 x 15 | M8 x 16 |
M3 x 15 | M4 x 15 | M5 x 16 | M6 x 16 | M8 x 20 |
M3 x 16 | M4 x 16 | M5 x 20 | M6 x 20 | M8 x 25 |
M3 x 20 | M4 x 20 | M5 x 25 | M6 x 25 | M8 x 30 |
M3 x 25 | M4 x 25 | M5 x 30 | M6 x 30 | |
M3 x 30 | M4 x 30 | M5 x 35 | M6 x 35 | |
M4 x 35 | M5 x 40 | M6 x 40 | ||
M4 x 40 | M5 x 45 | M6 x 45 | ||
M6 x 50 | ||||
M6 x 55 |
CuZn 37 (Ms 63) Brass
M3 x 6 | M4 x 6 | M5 x 8 | M6 x 8 |
M3 x 8 | M4 x 8 | M5 x 10 | M6 x 10 |
M3 x 10 | M4 x 10 | M5 x 12 | M6 x 15 |
M3 x 12 | M4 x 12 | M5 x 15 | M6 x 16 |
M3 x 15 | M4 x 15 | M5 x 16 | M6 x 20 |
M3 x 16 | M4 x 16 | M5 x 20 | M6 x 25 |
M3 x 20 | M4 x 20 | M5 x 25 | M6 x 30 |
M3 x 25 | M4 x 25 | M5 x 30 | |
M3 x 30 | M4 x 30 | ||
M4 x 35 | |||
M4 x 40 |
HZ-1 All-Purpose weld stud

1. New HZ-1 weld stud M8 – M12
2. Suited for all stud welding processes
3. Decorative and non-detachable weld joints
4. Highest quality and safety
5. 50 % less energy consumption
6. Thread usable right up to the base material

Manual feed or fully automatic feed using a special feeder
Steel 5.8 suitable for welding (copper-plated)

Manual feed or fully automatic feed using a special feeder
Stainless steel A2-50 (suitable for welding)
MachinesSteel 5.8 Suitable for Welding (Copper Plated) | Stainless steel A2-50 (Suitable for welding) | |||||
---|---|---|---|---|---|---|
Length | M8 | M10 | M12 | M8 | M10 | M12 |
15 mm | B71050 | – | – | B72050 | – | – |
20 mm | B71055 | B71100 | B71145 | B72055 | B72100 | B72145 |
25 mm | B71060 | B71105 | B71150 | B72060 | B72105 | B72150 |
30 mm | B71065 | B71110 | B71155 | B72065 | B72110 | B72155 |
35 mm | B71070 | B71115 | B71160 | B72070 | B72115 | B72160 |
40 mm | B71075 | B71120 | B71165 | B72075 | B72120 | B72165 |
45 mm | B71080 | B71125 | B71170 | B72080 | B72125 | B72170 |
50 mm | B71085 | B71130 | B71175 | B72085 | B72130 | B72175 |
55 mm | B71090 | B71135 | B71180 | B72090 | B72135 | B72180 |
60 mm | B71095 | B71140 | B71185 | B72095 | B72140 | B72185 |
HZ-1 universal welding stud with centering tip
SOYER Standard

D | L 0.6 | D1 ± 0.1 | D2 ± 0.08 | L1 ± 0.05 | A -0.5 | L2 | α ± 1 ° |
---|---|---|---|---|---|---|---|
M8 | see dimensions | 7.3 | 0.75 | 0.85 | 1.5 | ~ L – 0.3 | 3 ° |
M10 | 9.1 | ||||||
M12 | 10.9 |

MANUFACTURER:
SOYER
Welcome to HEINZ SOYER BOLZENSCHWEISSTECHNIK GMBH
We Make Stud Welding Simple
We are a medium-sized enterprise and have been specialists in the field of high-speed fastening technology for over 46 years. We offer high product quality and high-performance stud welding products from a single source and have been awarded numerous prizes and certifications. Rest assured that you are in safe hands.
We provide everything the world of stud welding technology has to offer. Everything straight from the manufacturer: portable mini stud welding equipment, matching welding guns and welding heads as well as large scale high-tech CNC stud welding machines. To ensure product safety and quality, our product range also encompasses welding studs & welding elements manufactured at our own local production site: Fast. Safe. Reliable.
The Soyer Company History
Heinz Soyer GmbH was founded in Planegg near Munich on 1 January 1970 by Helga and Heinz Soyer. In 1986, the first corporate building was constructed and the company relocated to Wörthsee-Etterschlag. Over the years four further commercial buildings were constructed.
For over 45 years, Heinz Soyer Bolzenschweißtechnik GmbH has specialized in the development, manufacturing, sale and servicing of stud welding equipment and machines together with the accompanying welding studs. SOYER products have won numerous national and international awards and prizes. Our company is comprehensively certified and our manufacturing locations are consistently monitored. All SOYER welding studs manufactured in house are supervised in accordance with the Ü-certification (Ü mark of conformity), are approved by the German Institute of Building and Construction Engineering and monitored by the GSI SLV-Munich.
With SOYER you can rest assured that you are in safe hands!

