Imported PEKUTECH sealing strip 2691

Imported PEKUTECH sealing strip 2691

Imported PEKUTECH sealing strip 2691

Jiangsu Qiucheng Electromechanical Co., Ltd

Professional procurement of European industrial control products and spare parts.

Advantages of Supply Brands and Models: Wurth Hardware Tools and Chemicals, Hahn Cooper, Gaimi Valves, Schmeisser Switches, IMM Nozzles, Ergowiss Hydraulic Lift Systems, Socla Valves, Kobold Flow Meter Switches, SBS Balancing Devices, ODU Connectors, SCHURTER Filters, AMF Fixtures, Phoenix Wig Miller Terminal Connectors, Bentley Envision Module Cards, etc

Our advantages:

1) Purchase directly from the manufacturer to ensure that all products are original.

2) Reasonably priced, bypassing layers of agents, maximizing discounts to customers.

3) We have a wide range of channels, with agents in China or customers protecting manufacturers from selling products. As long as you can provide the model, we can also purchase from distributors in various countries.

4) The warehouse ships consolidated shipments every Wednesday, greatly saving logistics costs.

5) Engineers provide you with professional pre-sales and after-sales technical consulting services.

Jiangsu Qiucheng Electromechanical Co., Ltd. is a modern enterprise that integrates research and development, engineering, sales, and technical services. It is a competitive equipment supplier in the field of automation in China. The company mainly deals in industrial automation products such as mechatronics equipment, high-precision analytical and testing instruments, environmental and new energy industrial equipment, and electric tools from developed countries such as Europe, America, Japan, and South Korea.

Secondly, the welding art language is unique.

The various forms of welding defects and welding heat affected zones mentioned above are formed through welding operations under certain specifications, and only through welding can these artistic languages be produced. The surface effect of welding art works is something that other metal processing techniques cannot or are difficult to achieve, hence the artistic quality of welding art.

By using different metal materials and welding techniques, the artistic value of welding can be demonstrated in various forms of metal art

1. Metal welding sculpture

In welding sculpture works, welds and cuts are not passively present as traces of technical processing, but are actively expressed in a wonderful and expressive language. A welded sculpture, with coarse welds exposed on the surface of the sculpture, and various irregular cutting marks have become the artist's beautiful artistic language

2. Metal welding wall decoration

If a wall decoration work is regarded as a painting, the processing of points, lines, surfaces, black, white, gray, and even colors in the picture can be achieved through welding. Various types and materials of metal wires, using different welding processes, will appear in different forms on the screen.

The work shown in Figure 3 adopts the method of manual plasma cutting, which uses the heat generated by the current during cutting to create a heat affected zone at the cutting edge, thus "dyeing" the bright white stainless steel with a slightly gradient color. At the same time, by adjusting the welding specifications, the strong airflow sprayed by the cutting gun will "blow" a randomly formed texture around the cutting edge at the moment when the steel plate melts. After the metal cools down after cutting, it solidifies into a beautiful cut mark, which contrasts with the texture of the flat and shiny stainless steel plate in the middle. The formation process of this random effect has a certain degree of randomness, but it is also a phenomenon that must occur under certain welding specifications.

From a size perspective, larger welding art wall decorations can be welded using semi-automatic CO2 gas shielded welding, while smaller ones can be welded using manual tungsten inert gas welding.

Characteristics of welding system

System architecture characteristics

1. Mechanical device

The spot welding machine system consists of three main parts: mechanical device, power supply device, and control device. In order to meet the requirements of the welding process, the spot welding machine adopts a dual stroke fast pneumatic transmission mechanism for the pressure mechanism (welding tongs). The opening degree of the welding tongs can be changed by switching the stroke control handle, which can be divided into large open and small open to meet the welding operation requirements. The usual state is that the welding tongs are short stroke open. When the control button is switched to the "power on" position and the handle switch is pressed, the welding tongs are clamped and pressurized. At the same time, the current returns to the short stroke open state after completing one welding cycle under the control of the control system.

2. Power supply device

The main power circuit consists of a resistance welding transformer, a thyristor unit, a main power switch, a welding circuit, etc. The welding equipment we use is a single-phase AC resistance welding machine with a power of 200kVA and a secondary output voltage of 20V. Due to the co production of multiple vehicle models, the welding tongs need to weld high-strength steel plates and low-carbon steel sheets. The welding tongs gun arm needs to transmit a large mechanical force and welding current. Therefore, the strength, stiffness, and heat generation of the welding tongs must meet certain requirements, and they must have good conductivity and thermal conductivity. At the same time, the welding tongs require water cooling. Therefore, a new type of welding tongs with electrode arms capable of withstanding 400kg pressure is selected.

3. Control device

The control device mainly provides signals to control the action of the resistance welding machine to connect and cut off the welding current, control the welding current value, and perform fault monitoring and handling. Welding wires for low-alloy high-strength steel contain more than 1% Mn and 0.3% -0.8% Mo, such as H08MnMoA and H08Mn2MoA, used for welding high-strength low-alloy steel with higher strength. In addition, according to the composition and performance requirements of low-alloy high-strength steel, elements such as Ni, Cr, V, and RE can be added to the welding wire to improve the weld performance.

The weld metal with a strength level of 590Mp is mostly made of Mn Mo welding wire, such as H08MnMoA, H08Mn2MoA, H10Mn2Mo, etc.

C、 Stainless steel welding wire

When welding stainless steel, the composition of the welding wire used should be basically the same as that of the stainless steel being welded. When welding chromium stainless steel, H0Cr14, H1Cr13, H1Cr17 and other welding wires can be used. When welding chromium nickel stainless steel, H0Cr19Ni9, H0Cr19Ni9Ti and other welding wires can be used; When welding ultra-low carbon stainless steel, corresponding ultra-low carbon welding wires such as H00Cr19Ni9 should be used. Flux can be melted or sintered, and it is required that the oxidation of the flux be low to reduce the burning loss of alloy elements.

D. Welding rod (electric welding)

J422 is a carbon steel electrode with titanium calcium coating. Dual use of AC and DC, capable of all position welding. Has excellent welding process performance and good mechanical properties; Stable arc, minimal splashing, easy slag removal, and easy re ignition; The weld seam is aesthetically pleasing, with welding waves that can be wide, narrow, thin, or thick, making welding easy and efficient.

Usage: Used for welding important low-carbon steel structures and low-alloy steel structures with low strength grades, such as Q235, 09MnV, 09Mn2, etc.

Welding Quality Standards

1. Technical factors affecting the quality of steel fusion welded joints in welding quality GB6416-1986

2. Welding Quality GB6417-1986 Classification and Explanation of Weld Defects in Metal Melting Welding

3. Welding Quality TJ12.1-1981 Construction Machinery Welding Quality Regulations

4. Welding Quality JB/ZQ3679 Quality of Welding Parts

5. Welding Quality JB/ZQ3680 Weld Appearance Quality

6. Welding Quality CB999-1982 Surface Quality Inspection Method for Ship Welds

7. Welding Quality JB3223-1983 Welding Rod Quality Management Regulations

8. GB/T 12469-1990 Welding Quality Assurance - Requirements and Defect Classification for Steel Melting Welded Joints, Abolished in 2005

Types of Welding

1. Welding rod arc welding:

Principle - Electric arc welding method using manually operated welding rods for welding. By utilizing the stable combustion arc established between the welding rod and the workpiece, the welding rod and workpiece are melted to obtain a firm welding joint. It belongs to the joint protection of gas and slag.

Main features - flexible operation; Low assembly requirements for welded joints; Wide range of weldable metal materials; Low welding productivity; The quality of the weld seam is highly dependent on the welder's operational skills and on-site performance.

Application - Widely used in manufacturing and maintenance industries such as shipbuilding, boilers and pressure vessels, machinery manufacturing, building structures, chemical equipment, etc. Suitable for welding various metal materials, thicknesses, and structural shapes in the aforementioned industries.

2. Submerged arc welding (automatic welding):

Principle - The arc burns under the solder layer. By utilizing the heat generated by the arc burning between the welding wire and the workpiece, the welding wire, flux, and base metal (workpiece) are melted to form a weld seam. Belonging to slag protection.

Main features - high welding productivity; Good weld quality; Low welding cost; Good working conditions; Difficult to weld in spatial location; High quality requirements for welding assembly; Not suitable for welding thin plates (poor arc stability when welding current is less than 100A) and short welds.

Application - Widely used in shipbuilding, boiler, bridge, lifting machinery, and metallurgical machinery manufacturing industries. All welded parts that can be kept in a horizontal position or have a small inclination angle can be welded using submerged arc welding. The thickness of the board should be greater than 5 millimeters (to prevent burning through). Welding carbon structural steel, low-alloy structural steel, stainless steel, heat-resistant steel, composite steel, etc.

3. Carbon dioxide gas shielded welding (automatic or semi-automatic welding):

Principle: Melting electrode arc welding method using carbon dioxide as a shielding gas. Belonging to gas protection.

Main features - high welding productivity; Low welding cost; Small welding deformation (concentrated arc heating); High welding quality; Easy to operate; High splashing rate; It is difficult to weld with AC power supply; Poor wind resistance; Cannot weld non-ferrous metals that are prone to oxidation.

Application - mainly for welding low carbon steel and low alloy steel. Suitable for various thicknesses. Widely used in automobile manufacturing, locomotive and vehicle manufacturing, chemical machinery, agricultural machinery, mining machinery and other sectors.

4. MIG/MAG welding (melting inert gas/active gas shielded welding):

MIG welding principle - using inert gas as shielding gas and welding wire as melting electrode

Extreme arc welding method.

The protective gas is usually argon, helium, or a mixture thereof. MIG uses inert gas, while MAG adds a small amount of active gas such as oxygen, carbon dioxide, etc. to the inert gas.

Main features - good welding quality; High welding productivity; No deoxygenation and dehydrogenation reaction (prone to forming welding defects, with particularly strict requirements for surface cleaning of welding materials); Poor wind resistance; Welding equipment is complex.

Application - Can weld almost all metal materials, mainly used for welding non-ferrous metals and their alloys, stainless steel and certain alloy steels (too expensive). The thinnest thickness is about 1 millimeter, and there are basically no restrictions on larger thicknesses.

With a professional technical and business team, the company not only brings high-quality products to customers, but also provides automation engineering technology services and complete solutions.