Against the backdrop of ever-increasing demands for efficiency, cost, and delivery stability in the manufacturing industry, more and more companies are facing multiple challenges, including slower production cycles, increased delivery pressure, limited die-casting mold lifespan, and continuously rising maintenance and downtime costs. These issues not only directly impact production capacity and delivery capabilities but also have a long-term impact on overall manufacturing costs and market competitiveness.
As a crucial component of advanced manufacturing processes, high-pressure die-casting molds significantly shorten the single-part molding cycle and improve molding consistency and stability through high-speed filling, precise temperature control, and optimized structural design. More importantly, through scientific material selection, cooling system design, and process matching, this technology can also effectively extend the lifespan of high-pressure die-casting molds, achieving the dual goals of “short cycle time + long lifespan,” providing a solid guarantee for customers to build an efficient and sustainable production system.
What Is The Production Cycle Time Of A High-Pressure Die-Casting Mold?
The production cycle time of high-pressure die-casting molds refers to the time required to complete one complete die-casting cycle in the high-pressure die-casting production process, usually expressed in “seconds/piece” or “mold cycles/hour.” Production cycle time is a key indicator for measuring die-casting production efficiency and directly affects production capacity and costs.
The production cycle time of high-pressure die-casting molds is influenced by various factors, primarily including: mold design and structure, die-casting process parameters, equipment performance, and the size and complexity of the die-cast parts.
Generally, the production cycle time for small high-pressure die-casting parts may be 30-60 seconds per piece, while for large integrated die-casting parts (such as automotive body structural components) it may be 100-180 seconds per piece. The specific cycle time needs to be determined based on actual production conditions and process requirements.
The Impact of Die-casting Mold Production Cycle Time on Cost
In high-pressure die-casting production, the production cycle time is one of the core factors affecting unit cost. A shorter cycle time allows for a higher number of products completed per unit time, enabling fixed costs such as equipment, labor, and energy to be distributed among more qualified products, thus significantly reducing the unit manufacturing cost. Conversely, an excessively long cycle time not only limits production capacity but also leads to low equipment utilization, increased labor and management costs, further driving up overall production costs.
Furthermore, the production cycle time directly affects the efficiency and maintenance costs of high-pressure die-casting molds. By optimizing mold design and processes, maintaining stable molding quality and extending mold life while shortening cycle time can effectively reduce hidden costs caused by mold failure, downtime for maintenance, or rework. Ultimately, the combination of high-efficiency, stable cycle time, and long-life die-casting molds will bring enterprises lower overall manufacturing costs, faster return on investment, and stronger market competitiveness.
How to Shorten The Production Cycle of High-pressure Die Casting Molds
Improving Die-Casting Cycle Time
① Exploring the Possibility of Using Core-Pulling and Pre-Pulling Programs in Current Equipment
The 850T and 2500T die-casting machines have achieved pre-pulling of cores, saving 1.2 seconds for GQ***1 and 2 seconds for JA***2. These two die-casting machines have implemented pre-pulling of cores, which can be applied to other products produced on these machines.
The functions of pre-pulling and pre-insertion of cores have been applied to the newly purchased die-casting machines at Jinli’s factory and the die-casting machines that Jinli relocated and upgraded.
② Exploring the use of larger diameter oil pipes and a complete connection structure to improve core-pulling speed.
In tests on the 100041# 1600T Lijing die-casting machine, the time for the upper and lower core-pulling of the GZ***1 before the improvement was 1.3 seconds; after the improvement, the time was 1 second, saving 0.3 seconds.
Using larger diameter oil pipes and a complete connection structure can improve the core-pulling speed. The improvement effect is even more significant with the parallel connection of large oil cylinders in aluminum die-casting molds.
Improvement of mold cooling.
① Developing a high-flow-rate intermittent cooling process and visualized water flow for areas with insufficient product cooling.
The flow-rate intermittent cooling function has been applied to the newly purchased die-casting machines at Jinli’s factory and the die-casting machines relocated and upgraded at Jinli. Currently, this function has been installed and implemented on our 10045# die-casting machine.
Improvement of Mold Spraying Efficiency
① Electrostatic Spraying Process Experiment: The current spraying time for G***62 is 26 seconds, while electrostatic spraying takes 14 seconds, resulting in a 12-second saving. For GZBT61, the current spraying time is 38 seconds, while electrostatic spraying takes 40 seconds. There is no time saving when using only one electrostatic spray gun (compared to 22 seconds with two guns).
Electrostatic spraying places high demands on the internal cooling of the high-pressure die-casting mold (G***62 mold temperature exceeds 300°C, with local temperatures exceeding 100°C).
Oil residue remains on the electrostatically sprayed surface.
② Collaboration with the factory and suppliers to improve the spraying efficiency of the spray box. The original solution involved 19 steps before optimization; after optimization using dedicated spraying points, it has been reduced to 15 steps. Using a dedicated nozzle and dedicated spraying method, the expected air filling time can be reduced from 31 seconds to 12 seconds.
The relationship between cycle time and mold life
Traditionally, it’s believed that a faster production cycle leads to greater wear and tear on high-pressure die-casting molds, resulting in shorter lifespans. However, in modern high-pressure die-casting processes, a fast cycle time ≠ short lifespan. Through scientific mold design and process control, high-efficiency production and long mold lifespan can be achieved simultaneously; they are not contradictory but rather mutually reinforcing.
A well-designed die-casting mold structure, a balanced thermal management system, and precise material and surface treatment selection ensure that the mold maintains stable thermal stress distribution and mechanical strength even under high-speed operation, effectively reducing thermal fatigue, crack propagation, and localized wear. Furthermore, optimized injection parameters, cooling layout, and coordinated design of the core-pulling and ejection systems can significantly shorten the single-part molding cycle and reduce the failure risk of high-pressure die-casting molds during long-term, high-frequency use.
Through systematic engineering optimization, enterprises can achieve the dual goals of **short cycle time + long lifespan**, bringing multi-dimensional comprehensive benefits: on the one hand, increasing single-machine capacity, shortening delivery time, and reducing unit manufacturing costs; on the other hand, reducing the frequency of high-pressure die-casting mold maintenance, extending replacement cycles, and improving production stability and product consistency, thereby building a more efficient, reliable, and sustainable manufacturing system for enterprises.
Successful Case Studies of Shortening the Cycle Time of Die Casting Molds
This case demonstrates a successful reduction in cycle time from 90 seconds to 75 seconds using a DK***4 mold from our Raidy high-pressure die-casting mold supplier.
The optimization primarily focused on several key components of the cycle time: from spraying back to the origin point to the mold closing light illuminating, from the mold closing light illuminating to the start of injection, from the start of injection to the part removal machine’s movement, and from the part removal machine’s movement to the spraying descent.
To achieve a target production cycle time of 75 seconds (reduced from the original 90 seconds), we systematically decomposed and optimized the cycle time of the entire die-casting production process, focusing on five key stages: core pulling, part removal, spraying, material unloading, and mold cooling. Through process parameter adjustments, mechanism motion optimization, and high-pressure die-casting mold structure upgrades, we achieved seamless integration, parallel operation, and time reduction across all stages.
Regarding the core pulling action, we redesigned the core pulling sequence and stroke path, optimized the hydraulic system response speed, and redesigned the core pulling mechanism to reduce weight and frictional resistance. This made the core pulling action smoother, faster, and more reliable, significantly shortening the core pulling completion time and avoiding downtime or product damage risks caused by unsmooth core pulling.
For part removal optimization, we introduced more efficient robotic arm path planning and motion coordination design, allowing the part removal action to be synchronized with the mold opening process, achieving motion overlap and parallel processing, reducing waiting time. Simultaneously, by optimizing the fixture structure and gripping point design, we improved part removal stability, avoiding extended cycle time due to inaccurate positioning or secondary adjustments. For the spraying process, we systematically optimized the spraying trajectory, nozzle arrangement, and spraying medium dosage to shorten the single spraying time while ensuring lubrication and demolding effects. Simultaneously, through coordinated design of the spraying action and the robot arm’s return action, we achieved parallel operation of the spraying, part removal, and mold closing preparation processes, significantly reducing auxiliary time.
In the material pouring stage, we optimized the gate structure, runner design, and alloy flow path to make the molten metal filling smoother and more stable, reducing additional time losses caused by poor filling, splashing (burrs), or rework. Furthermore, by co-optimizing with the injection system parameters, we improved filling consistency, ensuring that each batch can complete production at a stable cycle time.
For the high-pressure die-casting mold cooling system, we redesigned the cooling channels, optimizing the water path and cooling point distribution to achieve thermal balance and rapid heat dissipation in key areas of the mold, significantly shortening the time required for cooling and holding pressure stages. While ensuring the dimensional accuracy and surface quality of the castings, we achieved a faster solidification rate, providing core support for overall cycle time reduction.
Through systematic optimization and coordinated control of the above five key links, we have successfully reduced the overall production cycle time from 90 seconds to 75 seconds. Without sacrificing product quality, high-pressure die-casting mold life and production stability, we have significantly increased single-machine capacity and reduced unit costs, laying a solid foundation for customers to achieve more efficient and competitive large-scale production.
Advantages of Raidy Die Casting Molds
Raidy die casting mold suppliers provide technical support for die casting production, helping die casting factories achieve faster and more stable production cycles by optimizing key processes such as core pulling, part removal, spraying, material pouring, and mold cooling, thereby improving production efficiency and obtaining greater profits.
Our optimized processes can achieve:
Below 400T — 38s
400-850T — 55s-60s
1200-1600T — 70s-75s
2000-2500T — 85s-90s
4000T—100s Specific product requirements will be determined based on actual needs.
400-850T—55s-60s Example:
Assumptions: Original cycle time = 60 seconds/piece
Optimized cycle time = 55 seconds/piece
Daily output = 500 pieces
Machine cost = $100/hour
Save calculation:
- Cycle time reduction: 60-55 = 5 seconds/piece
- Cost saving per piece: 5 seconds x $100 / 3600 seconds ≈ $0.14/piece
- Daily savings: $0.14 x 500 pieces ≈ $70/day
- Monthly savings (assuming 22 working days): $70 x 22 ≈ $1540/month
Therefore, Raidy Die Casting Mold Supplier, can provide you with cost reduction and efficiency improvement capabilities. Please contact us.
Raidy Die Casting Mold Supplier’s DFM analysis capabilities, mature high-pressure die casting mold design experience, and in-depth optimization and control of production cycle time and high-pressure die casting mold life enable us to help customers significantly shorten production cycle time, improve overall equipment utilization, reduce unit manufacturing costs, and minimize maintenance and downtime risks, thereby achieving more efficient, stable, and competitive large-scale production.If you are looking for a partner with engineering strength and practical experience for your project, welcome to entrust your project to Raidy Die Casting Mold Supplier—we will use our professional technical team and reliable delivery capabilities to help your product be quickly launched and continuously create value.
