Die casting production process

1.Order Receip
After the customer places an order, our engineers will discuss the mold structure and technical solutions with the buyer. We will work hard to avoid unnecessary errors in the mold, and provide our customers with the highest quality products.

2.Mold Design
When designing the mold, you should pay attention to make the structure of the mold and parts reasonable. The mold affects the shape, configuration, quality and stability of the product during the die casting process. Reasonable mold design is easy to manufacture and it can increase efficiency and production time.

3.Mold Design Modification
Our company's professionals evaluate the mold design and make recommendations for modifications before finalizing and manufacturing. We will first confirm the manufacturability of a particular design and improve the mold if needed. Take advantage of a variety of foundry metals and processes to create products that meet the ultimate requirements.

4. Mold production

 Grand Machinery has multiple die casting machines ranging from 60 to 800 tons. We have 60 to 400 ton forging presses, and 180 to 800 ton gravity die casting machines, as well as the traditional foundry die casting process, all kinds of products can be produced.

5.Die Casting

The molten metal is pressed under pressure into a firmly locked metal mold cavity. It is then held by a powerful press until the metal solidifies. After the metal has set, the casting is taken out. Close the mold and lock it again for the next cycle.

6.Trimming

Die casting trim dies cut or shear extra aluminum from die cast parts. When the trimming mold is forced down, excess metal in the part is cut away to provide a clean edge to the part.

7.Precision Machining
Ningbo Grand Machinery Co., Ltd has in-house CNC machining shop to provide customer precision machining service after aluminum die casting and zinc die casting. Till 2019, Ryan has over 6 sets of cnc turning machines and four- axis cnc machine centers.

8.Cleaning
Cleaning is a different process performed to remove sand, scale and excess metal from the casting. Remove burnt sand and scales. Remove excess metal fins, wires, parting fins and gates. And finally test and check to see if there are any defects.

9.Package
We will place the finished castings in a standard wooden box. Ensure that the product is not damaged. We can also provide customized packaging services according to the special requirements of our customers.

 

CNC Machining Production Process

1. Order acceptance, review drawings

After the customer places the order, our engineers will analyze the product quantity, equipment conditions, and worker technology according to the drawings or the actual samples received to determine the process. Secondly, analyze the part drawing and product assembly drawing, check the accuracy and detailed size of the product, and conduct a detailed process analysis of the part. Write a more reasonable process and operation method into a process file in accordance with the prescribed form, archive and guide production.

2. Roughing first

Rough machining may include blank manufacturing, grinding, etc. According to the drawings or samples provided by the customer, first determine the processes and processes that need to be completed initially.

3. Finishing

Followed by finishing, the process is divided into turning, fitter, milling machine, etc. Our engineers will determine the machining allowance of each process, and each step needs detailed data, such as how much roughness must be achieved and how much tolerance must be achieved.

4.Surface treatment

Based on the drawings, our engineers will determine if the product requires surface treatment. We can provide various surface treatments: sand blasting, polishing, grinding, blasting, wire drawing, anodizing, electroplating, hardening, radium engraving, painting, electrophoresis, passivation, plastic spraying, etc., to provide customers with one-stop service .

5.Cleaning
Cleaning is a different process performed to remove sand, scale and excess metal from the products. Remove burnt sand and scales. Remove excess metal fins, wires, parting fins and gates. And finally test and check to see if there are any defects.

6. Inspection process

The inspection process is the main auxiliary process. After the completion of each process, as well as after the important processes and all the processing, before entering the warehouse, we will arrange inspection personnel to carry out the inspection process.

7.Package
We will place the finished castings in a standard wooden box. Ensure that the product is not damaged. We can also provide customized packaging services according to the special requirements of our customers.

 

Value Added Services

1 Surface treatment

All locations have secondary machining capabilities to provide a complete project solution. Ningbo Grand Machinery operates numerous in-house horizontal and vertical CNC Machining cells, which can be incorporated into your standard operation to provide a cosmetically finished part.

When you require additional finishing or coating, we gladly coordinate the following processes:

*Alodine (Chromate Conversion)
*Anodize
*Assembly
*Ball-Burnish
*Blast
*Chromate
*Copper-Nickel Chrome
*Dry Film Lubricant
*E-Coat (standard & other colors)

*Electro-Less Nickel (Al and Mg)
*Hand-Work (Al and Mg)
*Heat-Treat
*Impregnation
*Over-Molding (Rubber)
*Pad Printing/Silk Screening
*Paint (Liquid or Powder)
*Power Washing
*Tumbling (Vibe) De-Burring

2、 Package and transportation

As we all know, the packaging and transportation of products are also very important and crucial links.

How to ensure that the products will not be damaged by collision and extrusion in the transportation engineering?How to safely and quickly transport products to customers?We have always attached great importance to these issues, and in the long-term foreign cooperation, we have accumulated a lot of effective experience and methods.

1. Packing: Prevent from damage. We have foam, bubble bag, pearl cotton card slot, carton, wooden case and other packaging materials. We put on thick outer coat for the products to ensure that they will not be damaged by collision or extrusion in the process of transportation.

2. Transportation: we have DHL,UPS,TNT, fedex, SF express and other kinds of express to choose from. We can choose fast, safe and cheap express for customers according to their needs.