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Making Stamping Dies

Hay más de cien tipos de materiales que se pueden utilizar para hacer estampado dies, ranging from metals, plastics, inorganic non-metals, and paraffin. Let’s take a look at the actual processing and production, the stamping industry uses up to 24 kinds of mold materials. Making Stamping Dies

• 45: High-quality carbon structural steel is the most commonly used medium carbon quenched and tempered steel. Main features: good comprehensive mechanical properties, low hardenability, easy to produce cracks during water quenching. Small pieces should be quenched and tempered, and large pieces should be normalized. Application example: It is mainly used to manufacture high-strength moving parts, such as turbine impellers, compressor pistons, shafts, gears, racks, and worms. Welded parts should be preheated before welding and annealed to relieve stress after welding. Making Stamping Dies

• Q235A (acero A3): el acero estructural al carbono más utilizado. Características principales: alta plasticidad, tenacidad y rendimiento de soldadura, cierta resistencia al frío estampado performance, and good cold bending performance. Application example: Widely used in parts and welded structures with general requirements. Such as tie rods, connecting rods, pins, shafts, screws, nuts, ferrules, brackets, machine bases, and building structures and bridges with little force. Making Stamping Dies

• 40Cr: One of the most widely used steel grades in punching dies, it is an alloy structural steel. Main features: After quenching and tempering treatment, it has good comprehensive mechanical properties, low-temperature impact toughness, low notch sensitivity, good hardenability, and high fatigue strength can be obtained when oil cooling and parts with complex shapes are easy to be obtained when water cooling. Cracks occur. Medium cold bending plasticity, good machinability after tempering or quenching Co-infiltration, and high-frequency surface hardening. Application example: After quenching and tempering, it is used to manufacture medium-speed and medium-load parts, such as machine tool gears, shafts, worms, spline shafts, and thimble sleeves; Grinding parts, such as gears, shafts, main shafts, crankshafts, mandrels, sleeves, pins, connecting rods, screws, and nuts, intake valves, etc.; Parts, such as oil pump rotors, sliders, gears, spindles, and collars, etc.; used to manufacture heavy-duty, low-impact, wear-resistant parts such as worms, spindles, shafts, and collars, etc. after quenching and low-temperature tempering; carbon After nitriding treatment, transmission parts with large size and high low-temperature impact toughness, such as shafts and gears, are manufactured. Making Stamping Dies

• HT150: fundición gris. Ejemplos de aplicación: caja de cambios, bancada de máquina, caja, cilindro hidráulico, cuerpo de bomba, cuerpo de válvula, volante, culata, polea y tapa de cojinete, etc.

• 35: Common materials for various standard parts and fasteners. Main features: appropriate strength, good plasticity, high cold plasticity, and acceptable weldability. Local upsetting and wire drawing can be performed in the cold state. Low hardenability, use after normalizing or quenching and tempering. Application example: It is suitable for the manufacture of parts with small sections and large loads, such as crankshafts, levers, connecting rods, shackles, various standard parts, and fasteners. Making Stamping Dies

• 65Mn: commonly used spring steel. Application example: various flat and round springs, seat cushion springs, and spring springs of small size, can also be made into spring rings, valve springs, clutch reeds, brake springs, cold coil springs, circlips, etc. Making Stamping Dies

• 0Cr18Ni9: The most commonly used stainless steel (US steel number 304, Japanese steel number SUS304). Features and applications: It is the most widely used stainless heat-resistant steel, such as food equipment, general chemical equipment, etc. Making Stamping Dies

• Cr12: acero para troqueles de trabajo en frío comúnmente utilizado (número de acero estadounidense D3, número de acero japonés SKD1). Características y aplicación: El acero Cr12 es un acero para troqueles de trabajo en frío ampliamente utilizado, que es un acero con alto contenido de carbono y alto contenido de cromo. El acero tiene buena templabilidad y buena resistencia al desgaste; Debido a que el contenido de carbono del acero Cr12 es tan alto como 2.3%, la resistencia al impacto es pobre, es fácil de quebrar y es fácil de formar carburos eutécticos desiguales; El acero Cr12 se debe a Con buena resistencia al desgaste, se utiliza principalmente para fabricar punzones en frío, punzones, troqueles de corte, troqueles de encabezado en frío, troqueles de extrusión en frío, punzones y troqueles, manguitos de perforación, calibres que requieren alta resistencia al desgaste con menos carga de impacto. , troqueles de trefilado, troqueles de estampado, placas de laminación de roscas, troqueles de embutición profunda y troqueles de prensado en frío para pulvimetalurgia, etc.

• DC53: El acero de estampado para trabajo en frío de uso común importado de Japón, el número de acero del fabricante japonés Datong Special Steel Co., Ltd. Características y aplicaciones: acero para troqueles de trabajo en frío de alta resistencia y tenacidad. Después del templado a alta temperatura, tiene alta dureza, alta tenacidad y buen rendimiento de corte de alambre. Se utiliza para troqueles de estampado en frío de precisión, troqueles de trefilado, troqueles de laminado de alambre, troqueles y punzones de corte en frío, etc.

• DCCr12MoV: Wear-resistant chromium steel is made in China, with lower carbon content than Cr12 steel, and Mo and V are added to improve the unevenness of carbides. Mo can reduce carbide segregation and improve hardenability, while V can refine grains and increase toughness. This steel has high hardenability, the cross-section can be completely hardenable below 400mm, and it can still maintain good hardness and wear resistance at 300~400℃. Compared with Cr12, it has higher toughness and less volume change during quenching. Making Stamping Dies
• It has high wear resistance and good comprehensive mechanical properties. Therefore, it is possible to manufacture various dies with a large cross-section, complex shapes and high impact, such as ordinary drawing dies, punching dies, punching dies, blanking dies, trimming dies, rolling dies, wire drawing dies, cold extrusion dies, Cold cutting scissors, circular saws, standard tools and measuring tools, etc. Making Stamping Dies

• SKD11: Tough chrome steel, produced by Hitachi, Ltd., Japan. Technically, the casting structure in the steel is improved, the grains are refined, the toughness and wear resistance of Cr12MoV are improved, and the service life of the mold is prolonged. Making Stamping Dies

• D2: High carbon and high chromium cold work steel, produced in the United States. It has high hardenability, hardenability, wear resistance, good high-temperature oxidation resistance, and good corrosion resistance after quenching and polishing. Heat treatment deformation is small. It is suitable to manufacture all kinds of cold working dies, cutting tools, and measuring tools that require high precision and long life, such as drawing dies, cold extrusion dies and cold shearing knives. Making Stamping Dies

• SKD11 (SLD): non-deformable toughness high chromium steel, produced by Hitachi, Ltd., Japan. Due to the increase in the content of Mo and V in the steel, the casting structure in the steel is improved, the grains are refined, and the carbide morphology is improved, so the strength and toughness (flexural strength, deflection, impact toughness, etc.) of this steel are higher than those of SKD1 and SKD1, With high D2, wear resistance has also increased, and it has higher tempering resistance. The practice has proved that the life of this steel mold has been improved compared with Cr12MoV. It is often used to manufacture molds with high requirements, such as drawing molds, molds for impact grinding wheels, etc. Making Stamping Dies

• DC53: Acero de alta tenacidad y alto contenido de cromo, producido por Datong Co., Ltd., Japón. La dureza del tratamiento térmico es superior a SKD11. Después de templar a alta temperatura (520~530) ℃, puede alcanzar una alta dureza de 62~63HRC. En términos de fuerza y resistencia al desgaste, DC53 supera a SKD11 y la tenacidad es el doble que la de SKD11. La tenacidad de DC53 rara vez produce grietas y grietas en la fabricación de troqueles de trabajo en frío, lo que mejora en gran medida la vida útil. La tensión residual es pequeña y la tensión residual se reduce volviendo a una temperatura alta. Debido a que se suprimen las grietas y la deformación después del corte de alambre, la maquinabilidad y la abrasividad superan el SKD11, y se utiliza para troqueles de estampado de precisión, forja en frío y troqueles de embutición profunda, etc.

• SKH-9: General-purpose high-speed steel with high wear resistance and toughness, produced by Hitachi, Ltd., Japan. For cold forging dies, slitters, drills, reamers, punches, etc. Making Stamping Dies

• ASP-23: Powder metallurgy high-speed steel, made in Sweden. Carbide distribution is extremely uniform, wear resistance, high toughness, easy processing, and heat treatment dimensional stability. Used for all kinds of long-life cutting tools such as punches, deep drawing dies, drilling dies, milling cutters, and shear blades. Making Stamping Dies

• P20: Moldes de plástico del tamaño requerido para requisitos generales, producidos en los Estados Unidos. Operación eléctricamente erosionable. El estado de fábrica es HB270 ~ 300 preendurecido, dureza HRC52 templada.

• 718: Moldes de plástico grandes y pequeños con altas exigencias, fabricados en Suecia. Operación eléctricamente erosionable. Estado de fábrica pretemplado HB290~330, dureza templada HRC52.

• Nak80: Molde de plástico de alta precisión y gran espejo, producido por Datong Co., Ltd., Japón. El estado de fábrica es HB370 ~ 400 preendurecido, dureza HRC52 templada.

• S136: Anti-corrosion and mirror-polished plastic mold, made in Sweden. Pre-hardened HB<215 in factory state, quenched hardness HRC52. Making Stamping Dies

• H13: Commonly used die-casting die for aluminum, zinc, magnesium, and alloy die-casting, hot stamping die, aluminum extrusion die, etc. Making Stamping Dies

•  SKD61: molde de fundición a presión avanzado, producido por Hitachi, Ltd., Japón. A través de la tecnología de redisolución del balasto, la vida útil mejora significativamente en comparación con el H13. Para troqueles de estampado en caliente, troqueles de extrusión de aluminio.

•  8407: molde de fundición a presión avanzado, fabricado en Suecia. Para troqueles de estampado en caliente, troqueles de extrusión de aluminio.

• FDAC: Azufre añadido para mejorar su facilidad de corte. La dureza preendurecida de fábrica es HRC38~42, que se puede grabar directamente sin apagar ni templar. Se utiliza para moldes de lotes pequeños, moldes simples, diversos productos de resina, piezas deslizantes y piezas de moldes con un tiempo de entrega corto. Como molde de cremallera, molde de marco de anteojos, etc.

Making stamping dies, also known as die tooling or stamping tooling, is a crucial process in metalworking and manufacturing. Stamping dies are specialized tools used to cut, form, or shape sheet metal or other materials into specific designs or parts. Here’s an overview of the steps involved in making stamping dies: Making Stamping Dies

Design and Planning:

Determine the specific requirements of the stamped part, including dimensions, tolerances, and material type.
Create a detailed design or CAD (Computer-Aided Design) drawing of the part and the stamping die, including the cavity, punch, and any necessary features.
Plan the layout of the die components, such as punches, dies, guides, and strippers.
Material Selection:

Choose the appropriate materials for the die components. Common materials for dies include tool steel, carbide, and high-speed steel, depending on the complexity and volume of work.
Ensure that the material selected can withstand the forces and wear associated with the stamping process.
Rough Machining:

Start with rough machining of the die components using milling machines, lathes, or other cutting tools. Making Stamping Dies
Rough machining creates the basic shape of the die components, leaving enough material for subsequent finishing operations.
Heat Treatment: Making Stamping Dies

Heat treat the die components to enhance their hardness and durability. This step involves processes like hardening, tempering, and stress relieving to achieve the desired material properties.
Precision Machining: Making Stamping Dies

Perform precision machining to achieve the final dimensions and surface finish of the die components. This may include grinding, milling, drilling, and honing.
Accuracy and precision are critical in this step to ensure the stamped parts meet the required specifications.
Assembly:

Assemble the die components, including the punch, die, guides, strippers, and any additional components such as springs or ejector systems.
Proper alignment and clearances between components are essential to ensure smooth and efficient stamping.
Testing and Adjustment:

Test the assembled die on a press machine to check for any issues, such as misalignment, clearance problems, or inadequate material flow.
Make necessary adjustments to optimize the die’s performance and achieve the desired part quality.
Surface Treatment:

Apply surface treatments or coatings to the die components to improve wear resistance, reduce friction, or prevent corrosion.
Trial Runs and Fine-Tuning:

Conduct trial runs on the press to stamp sample parts and fine-tune the die’s operation until it consistently produces parts within specified tolerances.
Quality Control:

Implement a rigorous quality control process to inspect stamped parts for dimensional accuracy and surface finish.
Ensure that the die maintains its performance over time with regular maintenance and replacement of worn components.
Production:

Once the stamping die is fully tested and optimized, it can be used for high-volume production of stamped parts.
Creating stamping dies is a specialized and skill-intensive process that requires precision engineering, machining expertise, and a deep understanding of materials and manufacturing principles. High-quality stamping dies are essential for producing consistent and accurate stamped parts in various industries, including automotive, aerospace, electronics, and consumer goods manufacturing.

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