FISCHER hose fittings Germany FISCHER model FISCHER price

FISCHER hose fittings consist of hollow screws, combination washers, and tubing connectors. They seal by using hollow screws to compress two combination sealing gaskets onto the connector body. This pipe fitting is a right-angle connector, characterized by the ability to freely adjust the direction of piping, easy installation, and small space occupation. The operating pressure is less than 32 MPa. Pipe fittings are detachable connectors used to connect pipes, between pipes, and between hydraulic components. The connection threads of pipe fittings can be standard fine threads or tapered threads; tapered threads are commonly used in medium and low-pressure systems, while standard fine threads are commonly used in high-pressure systems.

FISCHER hose fitting installation

Cut pipes using sawing machines or specialized pipe cutting equipment; melting cuts (such as flame cutting) or grinding wheel cutting are strictly prohibited. The cut surface must be flat, with a plane flatness of no more than 1 mm and perpendicularity to the pipe axis of no more than 1 degrees. Remove chips and burrs using files, scrapers, etc. Clean internal debris and floating rust using clean compressed air or other methods. Cold bend using a pipe bending machine; hot bending is not allowed (for large-diameter pipes, right-angle connectors can be used instead of bends). The bending radius must be more than 4 times the pipe diameter. The ovality (change in major and minor axes) at the bend must be less than 10% of the pipe diameter, and no wrinkling is allowed. If there is a connector at the end of the bend, a straight section of pipe must connect the pipe end to the connector to avoid affecting installation. Use tungsten inert gas (TIG) welding for the root pass, followed by arc welding for filling. When pressure exceeds 21mpa, 5l/min argon gas must be supplied inside the pipe simultaneously. When the pipe wall thickness is greater than 2mm, cut a 35° bevel on the outer circumference and leave a 3mm gap at the joint. When the wall thickness is ≤ 2mm, do not cut a bevel, and leave a 2mm gap at the joint. During alignment, the pipe axes must coincide; the misalignment must be less than 15% of the wall thickness, and the deviation rate must be less than 1: 200. Pipe clamp backing plates are generally welded directly or via brackets such as angle iron to structural components; for concrete floor surfaces or wall sides, brackets are fixed with expansion bolts. When installing pipe clamps, ensure leveling, meaning the installation surfaces are at the same height. Pipe clamp spacing: for pipe diameter ≤ φ10, approximately 0.5–1 meters; for pipe diameter φ10–25, approximately 1–1.5 meters; for pipe diameter φ25–50, approximately 1.5–2 meters. However, at right-angle bends, one pipe clamp should be used on each side. Connect the pipe fittings to the equipment, and the pipes to the pipe fittings segment by segment, until all pre-installation is complete. For pipe fitting installation methods, see Chapter 4. Meanwhile, weld the pipe clamp backing plates to structural components or brackets; do not weld the pipes to the pipe clamps or brackets. After pre-installation is complete and inspected as qualified, print matching marks on the piping, assign a unique number to each piece, and list them in a table for reference. After the piping is removed and cleaned, restore it according to the numbers.

FISCHER hose fitting installation

The cleaned piping should be formally installed and greased as soon as possible. Tighten all pipe fittings segment by segment according to the printed matching marks, ensuring that the original o-type rings are inserted. All piping fixtures must be secure and not loose. All oil supply lines can be connected to the distributor outlets and lubrication points after greasing. Metric standard threads are indicated by uppercase M. Metric standard threads are divided into coarse-pitch and fine-pitch standard threads based on pitch. Coarse-pitch standard thread markings generally do not specify the pitch, e.g., M20 indicates coarse-pitch thread. Fine-pitch thread markings must specify the pitch. Standard threads are used for connecting and fastening mechanical parts. General thread connections mostly use coarse-pitch threads. Fine-pitch threads have slightly higher strength than coarse-pitch threads of the same nominal diameter and better self-locking performance. Pipe threads sealed by threads prevent leakage without adding filler or sealing material. Pipe threads sealed by threads have two connection forms: cylindrical internal thread with conical external thread, and conical internal thread with conical external thread. The former connection is sufficiently tight, while the latter is typically used only under high temperature and high pressure conditions.

FISCHER hose fitting manufacturing key points

Stainless steel elbows, 1. Keep welding rods dry during use. Calcium-titanium type rods should be dried at 150℃ for 1 hours. Low-hydrogen type rods should be dried at 200-250℃ for 1 hours (do not repeat drying multiple times, otherwise the coating may crack and peel). Prevent the welding rod coating from sticking to oil and other dirt to avoid increasing carbon content in the weld and affecting weld quality. During elbow welding, repeated heating causes carbide precipitation, reducing corrosion resistance and mechanical properties. Post-weld hardening is significant, making cracks likely. If welding with similar types of welding rods, preheating above 300℃ and post-weld slow cooling around 700℃ are required. If post-weld heat treatment cannot be performed on the weldment, chromium-nickel stainless steel welding rods should be selected. 2. To improve the corrosion resistance and weldability of stainless steel elbows, appropriate amounts of stabilizing elements such as Ti, Nb, and Mo are added, resulting in better weldability. When using similar types of chromium stainless steel welding rods, preheating above 200℃ and post-weld tempering around 800℃ are required. If the weldment cannot undergo heat treatment, chromium-nickel stainless steel welding rods should be selected.

Weidou Intelligent Technology specializes in selling German FISCHER oil pipe fittings, FISCHER hose fittings, FISCHER pipe fittings, FISCHER pipe component fittings, FISCHER rotary joints, FISCHER metal fittings, FISCHER brass fittings, FISCHER stainless steel fittings, FISCHER plastic fittings, FISCHER hydraulic pipe fittings, FISCHER adapter fittings, FISCHER threaded pipe fittings, FISCHER straight-through fittings, FISCHER articulated fittings, FISCHER compression fittings. FISCHER original imports from Germany. Welcome customers to inquire and order.