Qingdao HuaxinFoundry Automation ExpertStatic Pressure Molding Technology
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The fully automatic static pressure molding line is primarily used for automated clay-sand mold casting. Static pressure molding integrates mold production, conveying, pouring, cooling and shakeout into a continuous, automated casting process that improves production efficiency and casting quality.
Prepare and deliver green sand to the molding section.
Fill and compact the flask using the selected molding process.
Place required cores according to the casting process.
Align and close the cope and drag before pouring.
Transfer and pour molten metal according to the project configuration.
Move the poured molds through the planned cooling route.
Separate castings and sand after the specified cooling period.
Route castings to the selected downstream cleaning process.
Molding equipment is the core of the project. Sand preparation, core making, pouring, cooling, shakeout, cleaning and dust collection are configured only when included in the agreed line scope.
Main Features
A high level of automation means the complete line requires no more than 3–4 operators.
The automated control system reduces manual operations and improves production efficiency.
Reduces the scrap rate and machining allowance while lowering molten iron costs by approximately 2%.
A high-precision rigid positioning system and automatic mold-closing manipulator achieve mold-closing positioning accuracy of less than 0.2 mm.
Multi-head double-sided compaction produces hard, uniformly compacted molds that resist molten-metal expansion; compared with conventional mechanical molding, it directly reduces casting weight by 5%–10%.
Compaction Technology
Process selection depends on flask geometry, pattern complexity, sand conditions and the required mold characteristics. Huaxin confirms the final route during project engineering.
01
Airflow first moves sand toward the pattern area, followed by controlled squeezing to complete compaction.
02
The mold is compacted through coordinated pressure from the pattern side and the multi-head squeezing system.
Project Gallery
Four views present the complete line configuration, customer installation, sand-mold details and representative castings.
The overall configuration of the molding machine, flask conveying and cooling areas.
The equipment installation and supporting systems inside an operating foundry workshop.
The mold surface, cavity geometry and core-setting condition.
Casting geometry, surface condition and batch production at the customer site.
Huaxin static pressure molding lines serve a wide range of casting applications, from automotive components and motor housings to valves, pipe fittings and machinery parts. The selected installations below illustrate representative flask sizes and compaction technologies from our project experience.
† Values marked for confirmation are reproduced from the original project record and have not been altered.
Buyer Questions
These answers explain the selection process without assuming a fixed specification for every foundry.
It is an automated foundry line that produces sand molds using airflow pre-compaction and multi-head high-pressure squeezing. The complete line can perform flask separation, cleaning, molding, pattern draw, flask turning, core setting, mold closing, pouring, cooling, shakeout and flask circulation.
It is suitable for batch production of castings requiring high dimensional accuracy and surface quality, including automotive parts, engine and transmission housings, brake drums, brake discs, hubs, valve and pump bodies, pipe fittings, hydraulic and compressor castings, agricultural machinery parts, construction machinery castings and machine-tool components. Suitability is evaluated from casting size, weight, structure, material and production volume.
It is mainly used for gray iron, ductile iron and other ferrous castings. With suitable molding-sand practice, gating design and cooling time, it may also be used for certain steel or non-ferrous castings.
Conventional squeeze molding mainly compacts sand through mechanical pressure. Static pressure molding normally uses airflow for pre-compaction followed by multi-head high-pressure squeezing. This improves compaction around complex pattern areas and produces a more uniform hardness distribution.
Its advantages include high and uniform mold compaction, good casting accuracy and surface quality, suitability for complex, thin-wall and deep-cavity castings, high automation, stable cycles, less manual variation, flexible high-volume production and potential reductions in scrap and total production cost.
Capacity depends on flask size, casting type, core-setting time, pouring cycle, cooling time and automation configuration. Evaluation must consider not only the molding machine's theoretical cycle but also pouring, cooling, shakeout and sand-preparation capacity across the complete line.
Please provide casting names and drawings, unit weight, castings per flask, annual or shift output, shifts per day, working hours per shift, expected utilization, and required core-setting and pouring time. We calculate a suitable molding cycle and retain reasonable production margin.
Yes. Molding pressure, sand filling, vibration parameters and production cycles can be stored as recipes in the control system and recalled during product changes. Changeover is easier when different castings use the same or compatible flask sizes.
Yes. Huaxin has the capability to provide a complete one-stop solution.
Stable molding quality helps reduce mold swelling, sand wash, sand inclusions, sand drop, dimensional deviation and rough surfaces caused by uneven compaction. Casting quality also depends on sand properties, pattern and gating design, molten-metal quality and cooling practice.
Lead time depends on line scale, automation level, the amount of customized equipment and purchased-component schedules. A complete line requires engineering, manufacturing, pre-assembly, software commissioning and factory acceptance, so the final schedule is defined in the technical agreement.
The period depends on line length, equipment quantity, site foundations and the completion of customer-side works. Before delivery, the customer should complete the workshop, pits, power, compressed air, dust collection and other utilities according to the foundation drawings.