24 HYDRAULICS & PNEUMATICS January/February 2025 www.hpmag.co.uk Enhancing precision in hydraulic crimping processes When deforming tough or brittle materials, it is essential to manage the material flow with the utmost precision. UNIFLEX Hydraulik GmbH now offers Speed Control, a digitally controlled flow divider designed to provide accurate control of machine movement by finely adjusting the hydraulic oil flow. During the crimping of steel, plastic deformation occurs, wherein the material permanently alters its shape under excessive pressure. Factors such as material composition, steel quality, and treatment all play a crucial role in determining the material’s flow behaviour, demanding precise adjustments. Ultra-high-pressure fittings are particularly robust, requiring careful control to allow the material to flow properly during crimping. Even lighter fittings need sufficient time to be shaped correctly. UNIFLEX’s new flow divider enables a carefully managed deformation process, minimising the risk of errors and breakage, whether for high-pressure fittings or lighter sleeves. This enhanced control optimises the crimping process, ensuring the production of components with the desired properties and shapes. The sophisticated IPC control system in UNIFLEX crimping machines offers continuous regulation of the pressing speed, from zero to 100%. This feature enables faster, more efficient operation while maintaining consistently high quality. Additionally, the IPC system stores settings for each crimping process, which can be tracked through the central data recording system, “UDL”. For further information please visit: https://www.uniflex-hydraulics.com/wpcontent/uploads/2024/08/Digital-speed-control.mp4 HYDRAULICS Choosing the right swaging tools is critical to ensuring secure, leak-free connections in hydraulic and pneumatic systems. Poor tool selection or inadequate maintenance can lead to failed fittings, leaks, and costly downtime. H&P looks below at how to make the best choice and keep your tools in peak condition. Selecting the right swaging tool 1. Match the tool to the application – Ensure the swaging tool is compatible with the material and size of the hose or tubing. Manual tools work well for smalldiameter, low-pressure applications, while hydraulic or pneumatic swaging machines are necessary for heavy-duty operations. 2. Consider precision and adjustability – Look for tools with adjustable settings to accommodate different fitting specifications. Precision is key to avoiding under- or over-swaging, both of which can compromise system integrity. 3. Check for manufacturer compatibility – Always use tools recommended by the fitting or hose manufacturer. Mixing components from different brands can lead to improper swaging and potential failures. 4. Prioritise portability and ease of use – If on-site work is required, opt for compact, lightweight tools that still provide the necessary force. Cordless or batterypowered swaging tools can improve efficiency in remote locations. Essential maintenance tips 1. Regular calibration – Periodically calibrate swaging tools to maintain accuracy. Deviations in force application can weaken fittings and lead to premature failure. 2. Clean after each use – Remove debris, dust, and oil from swaging dies and moving parts. Contaminants can affect precision and wear down components. 3. Inspect for wear and damage – Check for worn-out dies, cracked handles, or hydraulic leaks. Replace damaged parts immediately to avoid performance issues. 4. Store properly – Keep tools in a dry, dust-free environment. Moisture and dirt can corrode metal parts, affecting longevity and reliability. By selecting the right tool and following a strict maintenance routine engineers can ensure durable, highperformance swaged connections every time. Selecting and maintaining swaging tools
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