Anti-theft Lock Knob PM Sintered Part
With the continuous progress and industrialization of powder metallurgy technology, the application of powder metallurgy parts in the lock industry has played an important role in promoting. At present, my country's lock industry is in a vigorous development stage. According to industry statistics, China's smart door lock market has more than 1,500 merchants and 3,500 brands.
Product Introduction
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Anti-theft lock knob PM sintered part |
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Item |
Material |
Production Process |
Sintering Temperature |
Mold |
Custom |
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Large bevel tooth powder metallurgy |
40rc |
Powder metallurgy |
1180℃ |
To be customized |
Yes |
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Chemical composition |
C:0.37~0.44 Si:0.17~0.37 Mn:0.50~0.80 Cr:0.80~1.10 Ni:≤0.30 P:≤0.035 S:≤0.035 Cu:≤0.25 Mo:≤0.10 |
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Available Materials |
Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, hard alloy, high temperature alloy (718, 713) |
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Product advantages
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Smoothness |
Dimensional accuracy |
Product density |
Appearance treatment |
Appropriate weight |
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Roughness 1～5μm |
（±0.1%～±0.5%） |
92～95% |
According to customer requirements |
0.03g～400g） |
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mechanical properties |
Sample blank size (mm): 25 heat treatment: Heating temperature for the first quenching (℃): 850; coolant: oil Second quenching heating temperature (°C):- Tempering heating temperature (°C): 520; Tensile strength (σb/MPa): ≥810 (when the actual hardness is 25HRC) Yield point (σs/MPa): ≥785 Elongation after break (δ5/%): ≥9 Reduction of area (ψ/%): ≥45 Impact absorption energy (Aku2/J): ≥47 Brinell hardness (100/3000HBW) (annealed or high temperature tempered state): ≤207 |
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The function of anti-theft lock knob
With the continuous progress and industrialization of powder metallurgy technology, the application of powder metallurgy parts in the lock industry has played an important role in promoting. At present, my country's lock industry is in a vigorous development stage. According to industry statistics, China's smart door lock market has more than 1,500 merchants and 3,500 brands. All kinds of smart locks are widely used in major residential areas and industry markets. Vast, its corresponding internal components such as powder metallurgy gears, bearings, etc. have a huge market demand, so it also brings rare market opportunities to my country's powder metallurgy manufacturers. So which lock spare parts powder metallurgy manufacturer is good?
The spare parts of the smart lock include: battery cover, indoor handle, indoor emergency knob, inner safety knob, lower battery and battery cover, lock cylinder, one-button sliding cover, screw accessories and other main parts.
Zhongwei Precision has rich experience in project operation in this area. In the manufacture of smart lock parts, its main production and processing products include smart lock gearbox oil bearings, smart lock pinions, smart lock gearbox gears, smart cabinet lock hook levers, smart cabinet lock accessories, smart lock forks, Smart lock accessories, lock cylinders, etc., all adopt precision powder metallurgy technology, which endows the parts with excellent corrosion resistance and anti-aging performance, far exceeding the locks of ordinary carbon steel parts, helping smart lock merchants to provide users with more convenient and intelligent security Guarantee has become an ideal choice in the market.
The small knob inside the anti-theft door is also called the anti-lock knob, which can control a deadbolt. Main functions: First, it is easy to use; when people are indoors, they can directly lock the anti-theft door through the anti-lock knob, avoiding the cumbersomeness of using a key to lock the door indoors. The second is to increase safety; the anti-lock part is an independent mechanical structure. Once the anti-lock is carried out indoors, the outside cannot be opened through any normal method, which has certain safety protection performance.
Key Points for Choosing Anti-theft Door Locks
The most critical and core of the anti-theft door is the door lock. If the lock is easy to pick, no matter how expensive the anti-theft door is, how good the quality is, and how good-looking it is, it doesn't make sense.
The country divides the lock cylinders of door locks into three types according to their safety: Class A, Class B, and Class C. Among them, the C-level lock has the highest security level, and the regular C-level lock cylinder has the safety certification of the Public Security Bureau.
1. Class A lock
At present, the A-level anti-theft lock keys on the market mainly have a word key and a cross key. The internal structure of the A-level lock cylinder is very simple, limited to the change of the marbles, and the grooves of the pins are few and shallow. The marble structure is a single row of marbles or a cross lock.
The time to prevent technical unlocking is not less than 1 minute, and the time to prevent destructive opening of A-level anti-theft locks is not less than 15 minutes.
2. Class B lock
The B-level lock key is a flat key with double rows of marble slots, which adds a row of curved and irregular lines compared to the A-level lock. There are three main types of lock cylinders, computer double-row lock cylinders, double-row crescent lock cylinders, and double-sided blade lock cylinders.
The time to prevent technical unlocking is not less than 5 minutes, and the time to prevent destructive opening of Class B anti-theft locks is not less than 60 minutes.
3. Class C lock
C-level locks are also called super B-level locks, which use double-row, computer, and compound curve groove patented keys. The shape of the key is a single-sided blade with an inner or outer milling groove, and the pin structure is a double-row blade with a V-shaped side column for locking.
If the interior of the C-level lock is damaged, there is basically no way to repair it, and it can only be replaced with a new one. If the lock cylinder is opened with a strong twisting tool, the interior of the lock cylinder will be damaged, self-explosive and locked, making it impossible to open.
The time to prevent technical unlocking is not less than 180 minutes, and the time to prevent destructive opening of super B-grade anti-theft locks is not less than 30 minutes.
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