Plastic Mold Design & Manufacturing

TONGDA LINK makes plastic molds for automotive parts, medical device, consumer electronics, industrial plastic parts and etc. Specializing in the manufacturing of high-precision molds such as automotive lights, bumpers, decorative trims, LED lens, medical tips, medical centrifuge tubes, etc.

good quality tool maker automotive lamp mold making

TONGDA LINK has 8 plastic mold engineers and 25 skilled mold-making technicians who are good at making precise plastic molds.

The main steel suppliers of TONGDA LINK are LKM, Gröditz and ASSAB. We will choose USA and Japan steel for mold manufacturing according to mold requirements. Due to our reliable steel supplier, skilled technicians and high-end precision mold manufacturing equipment, our mold quality is guaranteed. 

TONGDA LINK’s mold manufacturing capacity is 370 sets of molds a year, and the automotive industry accounts for about 40%, followed by related molds for medical equipment and consumer electronics products.

Our engineers design plastic mold according to plastic part features, the mold will be 2 PLATE MOLD, 3 PLATE MOLD, PIN-POINT GATE MOLD, HOT RUNNER MANIFOLD mold, THROUGHLY HARDEN mold (above 44HRC), PRE-HARDENED mold (below 44HRC).

The hot runner system we used for mold manufacturing are DME, MOLD-MASTER, SYNVENTIVE, HUSKY, INCOE, YOUDU, SM, and etc.

Plastic mold manufacturing process–EDM

EDM has high precision, can achieve machining accuracy of ±0.004mm to ±0.002mm; WEDM can reach ±2.5um machining accuracy, and roughness can also reach 0.15-0.2uRa; CNC surface finish can reach 0.29µRa, and small machine tools can reach 0.8µRa.

Different EDM machines have different performance, TONGDA LINK updates the equipment every year to ensure higher quality mold manufacturing.

TONGDA LINK COLLAPSIBLE MOLD DESIGN AND MANUFACTURING

TONGDA LINK collapsible mold design and manufacturing

Plastic Mold Steel

TONGDA LINK uses common steel comparison table to help you choose steel for your mold projects. Also you will know more about our plastic mold quality.

Common mold steel comparison of different countries

MOLD STEEL

Germany Gröditz USA Sweden Austria Japan LKM
2311 P20 UHB 2311 M201 PX-4/HPM7 LKM P20
2312 P20+S HOLDAX M200 PX5
2738/2738H/2738HH P20+Ni 718HH/IMPAX SUPREME M238 PX5-N
738HH P20MODHH LKM 738H
XPM P20MODHH NIMAX PAC5000/HPM Magic
XPM VICTORY ESR
2083 420 LKM 2083
2083 VICTORY ESR 420 ESR M310 S-Star LKM 2083H
2083 mold. VICTORY ESR STAVAX ESR/S136 ESR D-Star/HPM38S LKM 2083 ESR
CRMHP VICTORY ESR MIRRAX ESR M333 LKM420
OPTIN+ POLMAX LKM420h
2316 SCS 2 LKM 2316
2316 VICTORY ESR M300 LKM 2316H
2316 mold. VICTORY ESR M303
2767 GRANE K600 LKM S7 M
2711
2714 L6 ALVAR 14 W500 GFA/DM
CPM40 VICTORY ESR W8PH NAK-PRM/CENA 1
CPM50 VICTORY ESR MIRRAX 40
GEST80 VICTORY ESR M461 NAK80/HPM50
2085 420 F MOD RAMAX HH M314 G-Star/HPM77
GPM58 VICTORY ESR UNIMAX

HOT WORK STEEL

Germany Gröditz USA Sweden Austria Japan LKM
2343 / EX3 H11 W300 Isobloc DHA-world LKM 2343
2343 VICTORY ESR / EX3 VICTORY ESR H11 Premium VIDAAR 1 ESR W300 Isobloc LKM 2343 ESR
2344 / EX4 H13 8407 2M/ORVAR 2M W302 Isobloc DAC P LKM 2344
2344 VICTORY ESR / EX4 VICTORY ESR H13 Premium 8407 SUPREME/ORVAR SUPREME W302 Isobloc SKD61/DHA1-A LKM 2344 ESR
2347 H13+S DH2F/FDAC
EX1 VICTORY ESR 8418/DIEVAR DH31-EX/DAC-55
2367 VICTORY ESR / EX7 VICTORY ESR QRO90 SUPREME W403 Isobloc DAC-MAGIC
1.2360 mold VICTORY ESR / EX6 VICTORY ESR

COLD WORK STEEL

Germany Gröditz USA Sweden Austria Japan LKM
2357 S7
2379 D2 SVERKER-21/XW-42 K110 SKD11/DC11/SLD

To know more about the steel chemical compositionthe and application, please visit TONGDA LINK BLOG.

TONGDA LINK BLOG

SPI-SPE plastic mold classifications and standard

The mold category is divided into the following categories according to the American SPI-SPE standard.

SPI-SPE standard Class 101 Injection Mold

Cycles 1,000,000 shots or more, extremely high production mold

1. Detailed mold design required.
2. The minimum hardness of mold base material is 280BN. (DME #2 steel / 4140 steel)
3. The inner mold cavity/core steel must be as hard as 48~50HRC. All other details, such as sub-inserts, slides, heel blocks, gibs, wedge blocks, lifters, etc. should also be of hardened tool steels.
4. The ejection board must have guide posts.
5. Slides must have wear plates.
6. If possible, the mold cavity & core and slides should have temperature control.
7. For all cooling, it is recommended to use electroless nickel or 420 stainless steel plates. This can prevent rust and clean up garbage.
8. Need parting line locks for 101 class molds.

SPI-SPE standard Class 102 Plastic Mold

Cycles 1,000,000 shots or more, extremely high production mold

1. Detailed mold design required.
2. The hardness of the mold base material is at least 280BHN. (DME #2 steel / 4140 steel)
3. The inner mold cavity/core steel should be as hard as 48~52HRC at least, and the other useful mold components should also be treated in the same way.
4. It is recommended to use parting line locks for 102 class molds.
5. The following items may or may not be required. It depends on the final production quantity. It is recommended to check if the following items are used when make a plastic mold quotation.
A. Ejector plate guide post.
B. Slide ware plates.
C. Electroplating water line.
D. Electroplating mold cavity/core.

SPI-SPE Class 103 Injection Mold

Cycles less than 500,000 shots, medium production mold

1. Detailed mold design required.
2. The minimum hardness of mold base material is 165BHN. (DME #1 steel / 1040 steel)
3. The inner mold cavity/core steel is P20 (28~32HRC) or high hardness (36~38HRC).
4. The rest of the requirements depend on the need.

Class 104 Injection Mold

Cycles less than 100,000 shots, small production molds

1. The mold design is required.
2. The mold base material P20 (28~32HRC) can be made of mild steel or aluminum. (1040 steel)
3. The inner mold cavity/core can be made of aluminum, mild steel or other approved metals.
4. The rest of the requirements depend on the need.

Class 105 Injection Mold

Cycles less than 500 shots, rapid prototypes or test mold

Can be cast aluminum or epoxy or whatever material is strong enough to produce the minimum number of parts, or prototypes.

Make high quality plastic mold

TONGDA LINK is a professional precision mold manufacturing suppliers for high-precision automotive lamp molds, 1,000,000 injection molding shots SPI-SPE class101 stainless steel medical molds, optical parts, mirror reflective products, optic lens molds making, and etc.

Our factory is ISO9001 certified, the biggest plastic size we can cover is 2100mmX1400mm, weight around 8900 gram. We also support micro injection molding tool making and production for tiny precision plastic parts.

Get instant quote for your plastic mold projects

Rapid prototyping, plastic mold making, 2K injection molding, micro injection molding, insert molding, IMD injection molding and etc.

GET INSTANT QUOTE

Why choose TONGDA LINK plastic mold making?

High quality and cost-effective mold making, rich mold manufacturing experience makes TONGDA LINK more trustworthy, also create more benefits for customers.

Following mold projects show TONGDA LINK benefits and Challenges:

Benefits

Automotive Industry: large bumper mold, large dashboard mold, precise headlamp mold, taillamp mold, rearview mirror mold, water tank mold, fuel system connect mold

Medical Industry: medical device mold, medical tips mold, medical manifold mold, medical centrifuge tubes, medical stopcocks, medical Luer connetors & caps, medical Y-connector mold

Consumer Electronics & Plastics: rectangular box filter, drone plastic part mold, applicator mold, massager mold, optical lens mold, plastic reflector mold, coffee maker mold, vacuum cleaner mould

Challenges

  • It is difficult to process the complex three-dimensional surface of the product design, which requires longer time cost and high-end equipment investment.
  • Mold manufacturing technology is updated rapidly, and the engineering and technical team needs to continuously improve their technical capabilities.
  • New plastic raw materials are put into use, and injection molding production requires more trial and learning.
  • Diversified plastic product production, in addition to mold manufacturing, product surface requirements and assembly also require more technology and services.

Injection Molding Applications

From functional prototypes to full production runs, plastic injection molding’s key industrial applications include:

Automotive products

Plastic injection molding are ideal for automotive products production, such as IMD injection molding, 2k injection molding, overmolding parts are widely used for automotive trim, sunroof plastic parts, fuel system plastics, lamp housing, and etc.

Aerospace products

Plastic injection molding manufacture wear-resistant parts, transmission structural parts, turbines, gears, bearings, impellers, blades, screws, high-pressure washers, shuttles, sleeves, bushing connectors, etc in aerospace.

Medical Laboratory products

Various products in medical industry are manufactured by injection molding. Such as medical device, medical disposables, laboratory tips and tubes, laboratory instruments, and etc are huge demand. Plastic injection molding is good for high-volume production.

Consumer-facing products

Many consumer elctronics such as TVs, stereos, headphones, digital cameras, game consoles, computers, smart phones, sweeping robot, smart security, smart wearable devices, smart tablets, smart car electronics, etc need plastic injection molding manufacturing.

Explore plastic mold manufacturing technology and industry updates

Find plastic industry news, resources, insight into the plastic mold making and injection molding process, and more, on the TONGDA LINK blog:

TONGDA LINK BLOGS

TONGDA LINK Manufacturing Capabilities

At TONGDA LINK, we are your premier partner for comprehensive plastic injection mold engineering, design, and manufacturing solutions. With a commitment to excellence and innovation, we specialize in delivering high-quality molds tailored to meet the unique demands of various industries.