How to Choose The Best Hydraulic Machine for Kitchenware Manufacturer
When purchasing a hydraulic machine for a stainless steel kitchenware manufacturer, the core is to conduct an assessment based on four dimensions: product process requirements, production efficiency, equipment stability, and comprehensive cost. This ensures that the hydraulic machine accurately match the stretching forming process of kitchenware (such as pots, sinks, and thermos flask liners), while taking into account the economy and reliability of long-term production.
1. Core Prerequisite: Clarify Your Product and Process Requirements (Avoiding "Mismatches")
The key parameters of the hydraulic press must fully match the drawing process for stainless steel cookware. This is the basis for procurement. Failure to do so will result in low product yields, idle equipment, or overinvestment.
● Product specifications determine key equipment parameters.
○ Nominal pressure (tonnage): Calculated based on the thickness, drawing depth, and diameter of the cookware material, this is the most critical parameter.
For example: 1.2mm thick stainless steel cookware (30cm diameter, 8cm drawing depth) requires 80-120 tons; 3mm thick stainless steel sinks (20cm drawing depth) require 200-300 tons.
For reference: Drawing force ≈ π × workpiece diameter × material thickness × material tensile strength (stainless steel tensile strength is approximately 520-620 MPa). When selecting a suitable model, allow a 20%-30% margin to account for material fluctuations and mold wear.
○ Stretching stroke: It must cover the entire process of "upper mold descending → contact with material → stretching and forming → demolding and reset." It must be at least 2.5-3 times the maximum stretching depth (allowing for mold installation and workpiece access). For example, for a water tank with a 20cm stretching depth, the stroke must be ≥50cm. ○ Work surface dimensions: It must accommodate the mold and workpiece, with the horizontal and vertical dimensions 50-100mm larger than the maximum outer diameter of the mold (to facilitate mold installation, positioning, and operation).
○ Opening height: The distance from the work surface to the upper crossbar must meet the requirements of "mold height + stretching stroke + safety clearance" to prevent mold installation problems or interference during stretching.
● Stainless steel material properties
○ Stainless steel (especially food-grade 304 and 316) is highly tough and prone to wrinkling and cracking during stretching. Therefore, the equipment requires stable pressure output and precise speed control (low stretching speeds to avoid cracking, medium forming speeds to ensure accuracy).
○ If multi-pass stretching is involved (such as for complex-shaped pots and double-layer pots), confirm whether the equipment supports multi-stage pressure/speed programming (automatically switching parameters between different stretching stages through PLC control).
Choose The Best Hydraulic Machine for Kitchenware Manufacturer
II. Equipment Performance and Configuration: Directly Impacts Production Efficiency and Product Quality<br> ● Hydraulic System: Determines Stability and Accuracy
○ Core Component Brands: Prefer equipment equipped with reputable hydraulic components (e.g., Japan Yuken and Germany Rexroth for hydraulic pumps; Taiwan Yuken and Japan SMC for solenoid valves) to minimize faults such as oil leaks and pressure fluctuations.
○ Pressure/Speed Control Accuracy: Requires pressure fluctuation ≤ ±1%, and a speed adjustment range ≥ 0.05-10mm/s (to accommodate the stretching needs of stainless steel of varying thicknesses) to avoid uneven workpiece wall thickness due to unstable pressure.
○ Oil Tank and Cooling System: The oil tank capacity must match the pump flow rate (generally 3-5 times the pump's flow rate per minute) to prevent excessive oil temperatures. For continuous production (over 8 hours per day), a forced cooling system (water or air) is required to prevent hydraulic oil deterioration and performance degradation.
● Control system: Determines the degree of automation and ease of operation
○ Control method: Basic: Relay control (suitable for single-product, small-batch production; low cost but limited flexibility); Recommended: PLC + touchscreen control (can store multiple sets of process parameters for direct recall when switching between products, suitable for producing a wide variety of kitchenware; supports self-diagnosis for easy troubleshooting); High-end: Servo-hydraulic control (provides higher pressure/position control accuracy and over 30% energy savings, suitable for high-precision, high-volume production, such as stretching high-end non-stick pans). ○ Automated linkage function: If integration with production lines is required (e.g., automatic feeding, retrieval, and mold lubrication), confirm whether the equipment has external signal interfaces (e.g., Profinet or Modbus protocols) to support integration with robots and feeders, reducing manual intervention.
● Mold compatibility: Impacts mold change efficiency
○ Stainless steel kitchenware has a wide variety of products (pots, basins, sinks, etc.), requiring frequent mold changes. Therefore, the equipment must have a quick mold change system (e.g., a hydraulic clamp for the mold clamp can reduce mold change time from 30 minutes to less than 10 minutes).
○ The work surface should include mold positioning holes/slots to ensure alignment between the mold center and the center of the hydraulic press slide after each mold change, minimizing commissioning time.
III. Production Efficiency and Stability: Reduce Downtime Costs
● Equipment Operational Efficiency
○ Idle Stroke Speed and Operating Speed: The faster the idle stroke speed (the speed at which the slide moves without load), the shorter the non-productive time (recommended ≥150 mm/s). The operating speed must match the drawing process (e.g., 5-10 mm/s is recommended for stainless steel drawing).
○ Continuous Operation Capacity: Check the equipment's rated operating cycles (e.g., 10-15 cycles/minute) and confirm the lubrication method for the slide and guide rails (automatic forced lubrication is superior to manual lubrication, reducing wear and extending continuous operation).
● Reliability and Durability
○ Frame Structure: Prefer a one-piece cast frame or a steel plate welded and aged frame (to eliminate internal stress and prevent deformation and precision loss after long-term drawing), rather than a simple welded frame (which is prone to cracking).
○ Slide Guide Accuracy: Use a four-column guide (suitable for small and medium-sized kitchenware) or a frame-type dual-rail guide (suitable for deep-drawn products such as large sinks, which offer higher guide accuracy and smoother slide operation) to ensure uniform workpiece wall thickness during drawing.
○ Lifespan of Consumable Parts: Inquire about the material of seals (cylinders and oil pipe connections) (imported polyurethane seals with a lifespan of ≥8,000 hours are recommended) and the replacement cycle of hydraulic oil filters. Choose equipment with a wide range of consumable parts and easy procurement (avoiding reliance on a single supplier and reducing downtime).
IV. Overall Cost: Consider not just the purchase price but also the entire lifecycle cost.
● Procurement Cost: Balance configuration based on budget and process requirements, avoiding "over-purchasing" (e.g., a servo hydraulic press is unnecessary for small-batch production) or "low-price, low-quality" (low-quality equipment is prone to failure, increasing repair costs). Reference Price Range (2024 Market): An 80-ton PLC-controlled hydraulic press costs approximately 100,000-150,000 RMB, and a 200-ton servo hydraulic press costs approximately 300,000-500,000 RMB. Imported equipment (such as Japan's Aida) is 2-3 times more expensive than domestically produced equipment.
● Operating Costs
○ Energy Consumption: Traditional fixed-displacement pump hydraulic presses consume high amounts of energy, while servo hydraulic presses offer 30%-50% energy savings (suitable for continuous production of more than 8 hours per day, with the price difference recouped within 1-2 years).
○ Hydraulic Oil and Consumables: Confirm the recommended hydraulic oil type (such as 46# anti-wear hydraulic oil) and the replacement cycle (generally 6-12 months). Choose oils with widespread market distribution and transparent pricing to reduce consumable costs.
● Maintenance and After-Sales Costs
○ After-Sales Service Response Speed: Prioritize manufacturers with local service outlets who guarantee on-site repairs within 24 hours (a single day of equipment downtime can cost the kitchenware manufacturer tens of thousands of RMB). Spare Parts Supply: Confirm the supply cycle for core spare parts (such as hydraulic pumps, solenoid valves, and seals) (preferably in-stock, to avoid waiting more than a month), and whether spare parts are available (e.g., one critical solenoid valve can be kept in reserve for emergency use).
○ Training and Technical Support: The manufacturer must provide free installation and commissioning plus operator training (to ensure workers master parameter settings and troubleshooting), and offer long-term technical consulting (e.g., optimizing the stretching process and resolving product wrinkling issues).
V. Safety and Compliance: Avoiding Production Risks
● Safety Protection: Must comply with the national "Safety Requirements for Hydraulic Machines" (GB 28240). The equipment must be equipped with a two-handed start button (to prevent accidental activation during one-handed operation), a safety light barrier (to shut down the machine when the slide is blocked during downward movement), and an emergency stop button (to be installed at all operating positions). ● Environmental Requirements: The equipment must be leak-proof (e.g., oil tank seals and oil pipe connections with leak-proof gaskets) to prevent hydraulic oil leaks from contaminating the workshop (stainless steel kitchenware requires a high level of cleanliness in the production environment). The noise level must be ≤85dB (to meet workshop noise standards and protect worker health).
VI. Additional Considerations: Workshop Adaptability and Future Development
● Workshop Condition Adaptability
○ Floor Space and Load-Bearing Capacity: Measure the workshop space in advance (including space reserved for equipment installation, operation, and maintenance) and confirm the floor load-bearing capacity (e.g., a 200-ton hydraulic press weighs approximately 15 tons, requiring a floor load-bearing capacity of ≥20 kN/m². Reinforce the floor if necessary). ○ Power and Hydraulic Oil Supply: Confirm the equipment's rated voltage (e.g., 380V/3-phase) and total power (e.g., 15-30 kW). Reserve space for hydraulic oil storage (keep it away from ignition sources and in good ventilation).
● Future Scalability
○ If you plan to increase the size of your product in the future (e.g., from household cookware to large commercial sinks), allow for a 10%-20% margin in pressure and stroke when purchasing to avoid having to re-purchase equipment.
○ Choose a PLC control system that supports software upgrades. This allows you to implement new features (e.g., remote monitoring and production data statistics) through future upgrades without having to replace hardware.
VII. Procurement Process Recommendations
● Clear Requirements: Prepare a written list of product specifications (thickness, size, drawing depth), production capacity targets (daily output), and automation requirements (whether production lines should be integrated). Send this list to the supplier, requesting an equipment solution based on this list (rather than a general quote).
● On-site Inspection and Trial: Prioritize suppliers with a track record of similar customer experience (such as other stainless steel kitchenware manufacturers). Verify the equipment's operational status on-site and bring your own stainless steel materials and molds for an on-site trial (to test product qualification rate, drawing accuracy, and ease of operation).
● Compare Contract Terms: Focus on the warranty period (≥1 year for core components, ≥2 years for complete machines, ideally), after-sales service commitments (on-site visit times, spare parts availability), and payment methods (avoid full upfront payment, consider a "30% down payment + 50% payment upon acceptance + 20% payment after the warranty period").
Through a comprehensive evaluation of these dimensions, you can ensure that the hydraulic machine you purchase is both usable and effective, while also balancing short-term production costs and long-term production benefits, providing equipment support for the stable production of stainless steel kitchenware.
Contact US
Delishi Machinery Technology CO.,LTD.
Add: No.3 JinFu Road, Jinma Industrial Park, LiaoBu town, DongGuan City, GuanDong Province, China.
E-mail: Mr. Lee info@goodsjack.com
Web: www.goodsjack.com www.dgdelishi.com www.hydraulic-press-machine.com
Tel: +86-769-88057683 Mob/Whatsapp: +86-13509801050
Contact: Ms. Eva Lee
E-mail: sales@goodsjack.com
1. Core Prerequisite: Clarify Your Product and Process Requirements (Avoiding "Mismatches")
The key parameters of the hydraulic press must fully match the drawing process for stainless steel cookware. This is the basis for procurement. Failure to do so will result in low product yields, idle equipment, or overinvestment.
● Product specifications determine key equipment parameters.
○ Nominal pressure (tonnage): Calculated based on the thickness, drawing depth, and diameter of the cookware material, this is the most critical parameter.
For example: 1.2mm thick stainless steel cookware (30cm diameter, 8cm drawing depth) requires 80-120 tons; 3mm thick stainless steel sinks (20cm drawing depth) require 200-300 tons.
For reference: Drawing force ≈ π × workpiece diameter × material thickness × material tensile strength (stainless steel tensile strength is approximately 520-620 MPa). When selecting a suitable model, allow a 20%-30% margin to account for material fluctuations and mold wear.
○ Stretching stroke: It must cover the entire process of "upper mold descending → contact with material → stretching and forming → demolding and reset." It must be at least 2.5-3 times the maximum stretching depth (allowing for mold installation and workpiece access). For example, for a water tank with a 20cm stretching depth, the stroke must be ≥50cm. ○ Work surface dimensions: It must accommodate the mold and workpiece, with the horizontal and vertical dimensions 50-100mm larger than the maximum outer diameter of the mold (to facilitate mold installation, positioning, and operation).
○ Opening height: The distance from the work surface to the upper crossbar must meet the requirements of "mold height + stretching stroke + safety clearance" to prevent mold installation problems or interference during stretching.
● Stainless steel material properties
○ Stainless steel (especially food-grade 304 and 316) is highly tough and prone to wrinkling and cracking during stretching. Therefore, the equipment requires stable pressure output and precise speed control (low stretching speeds to avoid cracking, medium forming speeds to ensure accuracy).
○ If multi-pass stretching is involved (such as for complex-shaped pots and double-layer pots), confirm whether the equipment supports multi-stage pressure/speed programming (automatically switching parameters between different stretching stages through PLC control).
Choose The Best Hydraulic Machine for Kitchenware ManufacturerII. Equipment Performance and Configuration: Directly Impacts Production Efficiency and Product Quality<br> ● Hydraulic System: Determines Stability and Accuracy
○ Core Component Brands: Prefer equipment equipped with reputable hydraulic components (e.g., Japan Yuken and Germany Rexroth for hydraulic pumps; Taiwan Yuken and Japan SMC for solenoid valves) to minimize faults such as oil leaks and pressure fluctuations.
○ Pressure/Speed Control Accuracy: Requires pressure fluctuation ≤ ±1%, and a speed adjustment range ≥ 0.05-10mm/s (to accommodate the stretching needs of stainless steel of varying thicknesses) to avoid uneven workpiece wall thickness due to unstable pressure.
○ Oil Tank and Cooling System: The oil tank capacity must match the pump flow rate (generally 3-5 times the pump's flow rate per minute) to prevent excessive oil temperatures. For continuous production (over 8 hours per day), a forced cooling system (water or air) is required to prevent hydraulic oil deterioration and performance degradation.
● Control system: Determines the degree of automation and ease of operation
○ Control method: Basic: Relay control (suitable for single-product, small-batch production; low cost but limited flexibility); Recommended: PLC + touchscreen control (can store multiple sets of process parameters for direct recall when switching between products, suitable for producing a wide variety of kitchenware; supports self-diagnosis for easy troubleshooting); High-end: Servo-hydraulic control (provides higher pressure/position control accuracy and over 30% energy savings, suitable for high-precision, high-volume production, such as stretching high-end non-stick pans). ○ Automated linkage function: If integration with production lines is required (e.g., automatic feeding, retrieval, and mold lubrication), confirm whether the equipment has external signal interfaces (e.g., Profinet or Modbus protocols) to support integration with robots and feeders, reducing manual intervention.
● Mold compatibility: Impacts mold change efficiency
○ Stainless steel kitchenware has a wide variety of products (pots, basins, sinks, etc.), requiring frequent mold changes. Therefore, the equipment must have a quick mold change system (e.g., a hydraulic clamp for the mold clamp can reduce mold change time from 30 minutes to less than 10 minutes).
○ The work surface should include mold positioning holes/slots to ensure alignment between the mold center and the center of the hydraulic press slide after each mold change, minimizing commissioning time.
III. Production Efficiency and Stability: Reduce Downtime Costs
● Equipment Operational Efficiency
○ Idle Stroke Speed and Operating Speed: The faster the idle stroke speed (the speed at which the slide moves without load), the shorter the non-productive time (recommended ≥150 mm/s). The operating speed must match the drawing process (e.g., 5-10 mm/s is recommended for stainless steel drawing).
○ Continuous Operation Capacity: Check the equipment's rated operating cycles (e.g., 10-15 cycles/minute) and confirm the lubrication method for the slide and guide rails (automatic forced lubrication is superior to manual lubrication, reducing wear and extending continuous operation).
● Reliability and Durability
○ Frame Structure: Prefer a one-piece cast frame or a steel plate welded and aged frame (to eliminate internal stress and prevent deformation and precision loss after long-term drawing), rather than a simple welded frame (which is prone to cracking).
○ Slide Guide Accuracy: Use a four-column guide (suitable for small and medium-sized kitchenware) or a frame-type dual-rail guide (suitable for deep-drawn products such as large sinks, which offer higher guide accuracy and smoother slide operation) to ensure uniform workpiece wall thickness during drawing.
○ Lifespan of Consumable Parts: Inquire about the material of seals (cylinders and oil pipe connections) (imported polyurethane seals with a lifespan of ≥8,000 hours are recommended) and the replacement cycle of hydraulic oil filters. Choose equipment with a wide range of consumable parts and easy procurement (avoiding reliance on a single supplier and reducing downtime).
IV. Overall Cost: Consider not just the purchase price but also the entire lifecycle cost.
● Procurement Cost: Balance configuration based on budget and process requirements, avoiding "over-purchasing" (e.g., a servo hydraulic press is unnecessary for small-batch production) or "low-price, low-quality" (low-quality equipment is prone to failure, increasing repair costs). Reference Price Range (2024 Market): An 80-ton PLC-controlled hydraulic press costs approximately 100,000-150,000 RMB, and a 200-ton servo hydraulic press costs approximately 300,000-500,000 RMB. Imported equipment (such as Japan's Aida) is 2-3 times more expensive than domestically produced equipment.
● Operating Costs
○ Energy Consumption: Traditional fixed-displacement pump hydraulic presses consume high amounts of energy, while servo hydraulic presses offer 30%-50% energy savings (suitable for continuous production of more than 8 hours per day, with the price difference recouped within 1-2 years).
○ Hydraulic Oil and Consumables: Confirm the recommended hydraulic oil type (such as 46# anti-wear hydraulic oil) and the replacement cycle (generally 6-12 months). Choose oils with widespread market distribution and transparent pricing to reduce consumable costs.
● Maintenance and After-Sales Costs
○ After-Sales Service Response Speed: Prioritize manufacturers with local service outlets who guarantee on-site repairs within 24 hours (a single day of equipment downtime can cost the kitchenware manufacturer tens of thousands of RMB). Spare Parts Supply: Confirm the supply cycle for core spare parts (such as hydraulic pumps, solenoid valves, and seals) (preferably in-stock, to avoid waiting more than a month), and whether spare parts are available (e.g., one critical solenoid valve can be kept in reserve for emergency use).
○ Training and Technical Support: The manufacturer must provide free installation and commissioning plus operator training (to ensure workers master parameter settings and troubleshooting), and offer long-term technical consulting (e.g., optimizing the stretching process and resolving product wrinkling issues).
V. Safety and Compliance: Avoiding Production Risks
● Safety Protection: Must comply with the national "Safety Requirements for Hydraulic Machines" (GB 28240). The equipment must be equipped with a two-handed start button (to prevent accidental activation during one-handed operation), a safety light barrier (to shut down the machine when the slide is blocked during downward movement), and an emergency stop button (to be installed at all operating positions). ● Environmental Requirements: The equipment must be leak-proof (e.g., oil tank seals and oil pipe connections with leak-proof gaskets) to prevent hydraulic oil leaks from contaminating the workshop (stainless steel kitchenware requires a high level of cleanliness in the production environment). The noise level must be ≤85dB (to meet workshop noise standards and protect worker health).
VI. Additional Considerations: Workshop Adaptability and Future Development
● Workshop Condition Adaptability
○ Floor Space and Load-Bearing Capacity: Measure the workshop space in advance (including space reserved for equipment installation, operation, and maintenance) and confirm the floor load-bearing capacity (e.g., a 200-ton hydraulic press weighs approximately 15 tons, requiring a floor load-bearing capacity of ≥20 kN/m². Reinforce the floor if necessary). ○ Power and Hydraulic Oil Supply: Confirm the equipment's rated voltage (e.g., 380V/3-phase) and total power (e.g., 15-30 kW). Reserve space for hydraulic oil storage (keep it away from ignition sources and in good ventilation).
● Future Scalability
○ If you plan to increase the size of your product in the future (e.g., from household cookware to large commercial sinks), allow for a 10%-20% margin in pressure and stroke when purchasing to avoid having to re-purchase equipment.
○ Choose a PLC control system that supports software upgrades. This allows you to implement new features (e.g., remote monitoring and production data statistics) through future upgrades without having to replace hardware.
VII. Procurement Process Recommendations
● Clear Requirements: Prepare a written list of product specifications (thickness, size, drawing depth), production capacity targets (daily output), and automation requirements (whether production lines should be integrated). Send this list to the supplier, requesting an equipment solution based on this list (rather than a general quote).
● On-site Inspection and Trial: Prioritize suppliers with a track record of similar customer experience (such as other stainless steel kitchenware manufacturers). Verify the equipment's operational status on-site and bring your own stainless steel materials and molds for an on-site trial (to test product qualification rate, drawing accuracy, and ease of operation).
● Compare Contract Terms: Focus on the warranty period (≥1 year for core components, ≥2 years for complete machines, ideally), after-sales service commitments (on-site visit times, spare parts availability), and payment methods (avoid full upfront payment, consider a "30% down payment + 50% payment upon acceptance + 20% payment after the warranty period").
Through a comprehensive evaluation of these dimensions, you can ensure that the hydraulic machine you purchase is both usable and effective, while also balancing short-term production costs and long-term production benefits, providing equipment support for the stable production of stainless steel kitchenware.
Contact US
Delishi Machinery Technology CO.,LTD.
Add: No.3 JinFu Road, Jinma Industrial Park, LiaoBu town, DongGuan City, GuanDong Province, China.
E-mail: Mr. Lee info@goodsjack.com
Web: www.goodsjack.com www.dgdelishi.com www.hydraulic-press-machine.com
Tel: +86-769-88057683 Mob/Whatsapp: +86-13509801050
Contact: Ms. Eva Lee
E-mail: sales@goodsjack.com
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