High Strength Hard Chrome Plated Rod Micro Alloy Steel Grades

High Strength Hard Chrome Plated Rod Micro Alloy Steel Grades


Product Description

1. The micro alloy steel products are developed on the basis of proprietary technology of the control

rolling and cooling for substituting quenched and tempered piston rods with a variety of mechanical

performance requirements.

2. Micro alloy steel rod mainly used in mechanical manufacturing for the directly turning part of shaft
and rod, ect. For instance, it is used for manufacturing injection molding machine draglink, engineering

machinery push rod and hydraulic prop with the feature that hardened and tempered steel machanical

property needless quenched and tempered process
3. The mechanical property is correspond to quenched and tempered piston rods or over them and

very uniform on the whole cross section.
4. Hardness is more uniform on the whole cross section than quenched and tempered piston rods

5. Turning performance is commensurate to quenched and tempered piston rods or be superior to them.
6. Micro structure: Ferrite and pearlite with fine and uniform grain size.
7. The processing period is shortened, and the productivity is enhanced and the occupied capital is
reduced..
8. The processing cost is low, there is no need of quenched and tempered process and the second
turning but the mechanical property is correspond to quenched and tempered piston rod

Detailed Description

1. MATERIAL: HY4700, HY4520

2. CHEMICAL COMPOSITION(%)

3. MECHANICAL PROPERTIES

4. SUPPLY CONDITION
Ground and chrome plated
5. CHROME THICKNESS
20 to 30 micron
6 .SURFACE HARDNESS
850-1150HV (vickers 100g)

7. TOLERANCES ON DIA
ISO f7 on the diameter
8.OVALITY
Half of the tolerance ISO f7
9. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron

10. STRAIGHTNESS
≤0.2MM/M

11. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10

12.POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10

13. WELDABILITY
Good

14. COHESION

No craks,breaking or detaching after thermic shock(warming up at 300 celsius degrees

and cooling in water)

15. CERTIFICATE
All certificate related with material heat treatment and plating is required

16. PACKING
Anti rust oil to be applied on material and each rod to be packed in paper sleeve

Jiangsu New Heyi Machinery Co., Ltd is specialized in producing precision long small diameter axes and  hydraulic piston rod. The products are widely used in mine machinery industry, textile and printing machinery industry and so on. Hydraulic cylinder piston rods are also supplied as the OEM parts for  many large and medium enterprises, such as Heli Forklift Ltd, Hangzhou Forklift Ltd, Sanyi Heavy Industry Ltd.  We have enjoyed a good reputation with high quality and good after-sale service in recent years.  Also our products are exported to USA, Canada, Southeast Asia, Austria, Australia and Brazil etc.

We have set up the principle of “high quality, good reputation”, carried out a series of rigorous quality 

management system, and have already passed the ISO9001:2008 international quality system. Our inspection 

apparatus and production equipment are advanced and superior, that ensure the product of high quality.

We have complete piston rod manufactured equipment covering all processes. The critical processes of heat 

treatment and chrome plating are finished in our own company, which ensure the quality control of the key 

technical requirements.

Our factory is located in Wuxi which is famous for the peaches. The transportation is very convenient, only 

30 minutes to Wuxi Airport and railway station. About 1 kilometer from the entrance of the expressway access 

to Shanghai. The factory covers an area of about 25000 square meters and has more than 200 employees, 

among which more than 20 are technical engineers.