×

Contact Form

FURNACE BRAZING

Brazing has often been overlooked by designers, possibly due to a poor historical image. The modern brazing process and materials are a far cry from this perception however - it has become an exceptional joining process that makes possible engineering assemblies with joint strengths that cannot be achieved by any other means.

BALÇIK Metal Treatment division is the one of the well known furnace brazing specialist in Turkey for multi-jointed components in Stainless Steel.
The process and technology was developed primarily due to the requirement of the brazing of heating elements at first, but afterwards BALÇIK has founded this division to become a service center for brazing requirements of the market.

Furnace Brazing

Often referred to as Mesh Belt Brazing, Bright Brazing, Nickel Brazing, Copper Brazing, Continuous Brazing, Atmosphere Brazing.
An ideal process for very low to very high volume parts in steel or stainless steel. Carried out under a reducing furnace atmosphere resulting in a clean component & one requiring no post braze cleaning.

Brazed stainless steel parts must always be clean and bright, and have precise micro structure requirements for strength and corrosion resistance properties. Most of conventional and typical brazing or annealing processes cannot reliably meet these requirements. Our furnace brazing system will provide you with superior results at a fraction of the cost our old technology processes charge.

Our Parts are Always Bright and Always Right

Guaranteed Punctual Delivery
The furnace brazing process, along with our unique efficiency systems, guarantees you receive prompt deliveries. We serve customers throughout Turkey and Europe with precise deliveries and reduce the lead times for the brazing and heat treating process. Your parts do not spend time at our facility; they are delivered immediately and with the quality you expect.

Better Processes
Our use of pure atmospheres and continuous furnaces is unique. This combination produces the cleanest brightest parts with the strongest joints. These conditions are ideal for stainless steels. Your parts will meet the exacting standards of the design expected by your customer.

Best Service
We are open 24 hours per day, seven days per week. We run your parts when you need them and can work weekends to meet unexpected demands. We are on time. You are not surprised with expediting costs or entanglements.

Capabilities

Base Metals
▪ Mild Steel
▪ 300 series Stainless Steels
▪ 400 series Stainless Steels
▪ Carbide
▪ Tungsten
▪ Copper

Braze Alloys
Copper
Nickel
Silver

What is Brazing

Brazing is a process in which two metals are joined together using a filler metal whose melting point is above 840° F but below the melting point of the base metals being joined. The filler metal is distributed between the closely fitted metal surfaces by capillary action.

Typical Applications
The list of potential applications is substantial, however, the most common categories are:
▪ Hydraulic Fittings
▪ Heat Exchangers
▪ Tube Manipulations
▪ Machined Assemblies
▪ Pressed Assemblies
▪ Fabrications
Wire Formed Assemblies

Joint Design
Brazing relies on capillary attraction. Therefore, the joint design is crucial in the success of the brazing. An unbroken capillary path with gaps not exceeding 0.1mm are required for most applications.
Whenever possible, joints should be self-supporting or self-jigging as furnace jigs can be expensive, they may move in the heat during the process and they occupy furnace space adding to the unit costs.

Joint Strength
A correctly designed and brazed joint should produce a strength of joint that is in excess of the parent metal.

 

Advantages & Disadvantages

Furnace Brazing is still one of the least appreciated manufacturing techniques with many engineers being unaware of its existence or its advantages as a method of joining two or more parts together.

Main Advantages of Furnace Brazing:
▪ Stronger assemblies. Joint strengths greater than the parent metal are possible. Parent metals are not fused or damaged. Permanent joints.
▪ Produce extremely clean brazed parts with superior, flux-free braze joints of high integrity and strength.
▪ Complex assemblies from common parts. Furnace brazing facilitates the manufacture of complex & delicate assemblie which might be impossible to achieve by any other method.
▪ Multi-joint processing in a single pass. Multiple joints can be brazed at once.
▪ The process is a semi-automatic process used due to its adaptability to mass production. Main advantage is the ease with which it can produce large numbers of parts per hour.
▪ Efficient designs (e.g. stainless and mild steel combinations). Dissimilar metals can be brazed together.
▪ Long and inaccessible joints can be filled successfully.
▪ Different metal thickness are permissible in brazed joints.
▪ Leak-tight and attachment properties.
▪ Lighter weight components.
▪ Elimination of special tooling or fixtures. Components to be brazed can be designed for self alignment without the need for fixturing.
▪ Elimination of other processes like machining, staking or threading.
▪ No need for post braze cleaning operations.
▪ Uniform stress relief throughout. Stresses are relieved during brazing. Residual stresses are reduced due to slow heating and cooling cycles. This, in turn, can significantly improve the thermal and mechanical properties of the material, thus providing unique heat treatment capabilities.
▪ The parts are uniformly heated under tight process control. A uniformed heating & cooling rate can reduce the potential for distortion. A controlled heat cycle minimizes or eliminates distortion.
▪ No surface deterioration takes place during the process.
▪ Rapid reproducible results are obtainable.

Disadvantages of Furnace Brazing:
▪ Close fits are necessary to facilitate the capillary action.
▪ Component parts will be annealed during the process.
▪ Provision for location of the brazing material has to be allowed for in the design.

TOP