Characteristics of precision hardware mold accessories

In addition to requiring high enough strength and toughness in operation, precision metal mold parts also require surface properties that are crucial to the working performance and service life of precision mold parts. To improve these properties, relying solely on the improvement and improvement of the base material is very limited and uneconomical. However, through surface treatment technology, you can often get twice the result with half the effort. This is why surface treatment technology has developed rapidly. Mold polishing technology is an important part of mold surface engineering and an important post-processing process in the mold manufacturing process. Due to certain problems in domestic polishing technology and materials, a large part of injection molds that require high transparency such as point-and-shoot camera lens injection molds, CD and VCD discs, and tools still rely on imports.

The mirror mold material is not only a matter of chemical composition, but more importantly, it requires the use of a series of advanced processes such as vacuum degassing, argon protection ingot casting, vertical continuous casting and rolling, and flexible forging during smelting, so that the mirror mold steel has fewer internal defects and It has a series of advantages such as fine impurity particle size, high degree of dispersion, fine metal grain size, and good uniformity to meet the requirements of polished to mirror-like mold steel. The surface treatment technology of mold parts is a systematic engineering that changes the morphology, chemical composition, organizational structure and stress state of the surface of precision mold parts through surface coating, surface modification or composite treatment technology to obtain the required surface properties. Nitriding processes include gas nitriding, ion nitriding, liquid nitriding and other methods. In each nitriding method, there are several nitriding technologies that can adapt to the requirements of different steel types and different workpieces. From the surface treatment method, it can be divided into: chemical method, physical method, physicochemical method and mechanical method.

It is worth noting that mold surface polishing is not only affected by polishing equipment and process technology, but also by the mirror degree of the mold material. This point has not attracted enough attention. In other words, polishing itself is restricted by the mold material. Although new treatment technologies aimed at improving the surface properties of precision mold parts are constantly emerging, nitriding, carburizing and hardened film deposition are mainly used in the manufacturing of precision mold parts. Since nitriding technology can form a surface with excellent properties, and the nitriding process is well coordinated with the quenching process of precision mold parts steel, and the nitriding temperature is low, no intense cooling is required after nitriding, and the deformation of precision mold parts is extremely small. , so the surface strengthening of precision mold parts is the earliest and most widely used nitriding technology.

Precision mold steel materials require high hardness

The machining accuracy is measured by the tolerance grade. The smaller the grade value, the higher the accuracy; the machining error is expressed by a numerical value. The larger the numerical value, the greater the error. High processing accuracy means small processing errors, and vice versa; the actual parameters obtained by any processing method will not be absolutely accurate. From the function of the part, as long as the processing error is within the tolerance range required by the part drawing, it is considered that the processing is guaranteed Accuracy. The processing quality of mold parts includes processing accuracy and surface quality: processing accuracy is the degree to which the actual size, shape, and position of the three geometric parameters of the surface of the processed part conform to the ideal geometric parameters required by the drawing; the deviation of the actual geometric parameters of the part from the ideal geometric parameters The numerical value is called the machining error.

For complex cavities and multi-functional composite molds, as the shape of the parts becomes more complex, the design and manufacturing level of the mold must be improved. Multiple grooves and multiple materials can be formed in a set of molds or assembled into multi-functional composite molds. Molds require a large amount of processing programming programs, comprehensive cutting capabilities and high stability for deep holes and cavities, which increases the difficulty of processing. The quality of the machine depends on the processing quality of the parts and the assembly quality of the machine. The processing quality of the parts includes the processing accuracy of the parts and the surface quality. The machining accuracy refers to the difference between the actual geometric parameters (size, shape and position) of the parts after processing and the ideal geometry. The extent to which the parameters are consistent. The difference between them is called machining error. The size of the machining error reflects the level of machining accuracy. The larger the error, the lower the processing accuracy, the smaller the error, the higher the processing accuracy; the main aspects that affect processing accuracy: dimensional accuracy, the degree to which the actual size of the processed part matches the center of the tolerance zone of the part size.

Things you need to know when purchasing precision mold parts

1. Simple installation and how to maintain parts: Check whether simple and clear installation instructions are delivered. Where applicable, products packaged together should also be labeled with care procedures such as cleaning, lubrication, disassembly and replacement procedures.

2. Product price, tax included and freight: These mold spare parts should have market competitiveness and value-added space, and they must be genuine materials and cannot be mistaken for genuine ones.

3. Interchangeability of parts: After a period of time, when the supplier’s parts design changes, you can replace the previous version in time.

All of the above factors should be considered when purchasing precision mold parts. Please ask your supplier whether they can meet all of the above considerations or can provide appropriate and professional answers to any of your questions and provide relevant documentation. Remember, the key is that the product you choose has a broad offering, is available globally, and can be adapted to all your applications. Choosing one vendor as the sole provider for all your applications will eliminate the compatibility and stability issues that can arise when using products from multiple vendors.

Problems in processing precision mold parts

The basic requirement for precision mold parts is to obtain high precision and smooth surface quality of parts, and to easily process fine areas. The tolerance can be appropriately adjusted during semi-finishing to save calculation time. According to our experience, it is best to choose a tool that is smaller than the tool used for finishing, or to clear the root in advance to avoid collision of the tool at the corner during finishing. If you are confident, you can leave a smaller cutting allowance to extend the life of the finishing tool.

During the actual processing of precision mold parts, we found that when using fixed-axis milling in the past, if UG's default arc interpolation method {circular-perp to TA} was selected, the output PTP file capacity would be larger, especially if 45 degrees was selected. finishing. On machine tools with poor pre-reading capabilities, if a higher feed speed is used, the surface of the workpiece will have different shades of cutting, which will greatly reduce the surface finish. In repeated experiments, we found a suitable solution and chose another arc interpolation method [circular-perp/par TA} provided by UG. The ptp file processed by this method is greatly reduced. Small, which reduces the pre-reading load of the machine tool and can easily maintain very high smoothness and surface quality at high feed speeds.

We are accustomed to using the area-milling method in fixed-contour during semi-finishing, and the on part function is particularly suitable. It can maintain a very consistent cutting spacing along the curved surface, completely remove the tool marks caused by rough machining on all surfaces, and ensure the stability of the finishing load.

Our Services

1. Specialized in precision mold part ,inquiries will get highly attention and be prompt response.(within 24 hours).

2. Advanced facilities and experienced engineers, rich experience in mold parts.

3. Guaranteed quality, superior material quality compared to all other.

4. Customer oriented, efficient solution to control the cost for our client.

5. One-stop service, any questions can be solved at the first time by us.

6. Each part has been got 100% inspection before shipment.

Our adavanges

1. Clean and tidy workshop.

2.Strick and serious manangement, skilled and expericenced technicians.

3. Various raw material(imported and Chinese) to meet different needs of customers.

4.Equipment of high pricision.( Surface grinding,Sodick Wire-cutting.drilling machine).

5.The QC go along with all the production processes in our factory.

6. You can use English or Japanese for cummunication

Payment Terms

T/T,Paypal,Western Union,50% deposit, balance before shipment is available

Package:PE bag with anticorrosive oil,foaming film with carton,or wooden box according to customer's requirement.

Delivery:Delivery time is usually 7-15 working days for type of ejector pin,specific time is according to quantity.

Shipping:We ship using express such as DHL, UPS, FEDEX etc. or according

to customer's requirement . It takes about 3-5 days to arrive your front

door, and proof of shippments are provided with a shipping or tracking

number. And we ship by occean shippment for larger quantity items,

it will be economic for customers.